Multiple vulnerabilities were found in the rubygems package management framework, embedded in JRuby, a pure-Java implementation of the Ruby programming language. 

CVE-2018-1000075

A negative size vulnerability in ruby gem package tar header that could cause an infinite loop.

CVE-2018-1000076

Ruby gems package improperly verifies cryptographic signatures. A mis-signed gem could be installed if the tarball contains multiple gem signatures.

CVE-2018-1000077

An improper input validation vulnerability in ruby gems specification homepage attribute could allow malicious gem to set an invalid homepage URL.

CVE-2018-1000078

Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute

For Debian 7 'Wheezy', these problems have been fixed in version 1.5.6-5+deb7u1.

We recommend that you upgrade your jruby packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - The openssl gem for Ruby uses the same initialization     vector (IV) in GCM Mode (aes-*-gcm) when the IV is set     before the key, which makes it easier for     context-dependent attackers to bypass the encryption     protection mechanism.(CVE-2016-7798)

  - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an     HTTP Response Splitting attack. An attacker can inject     a crafted key and value into an HTTP response for the     HTTP server of WEBrick.(CVE-2017-17742)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in install_location function of     package.rb that can result in path traversal when     writing to a symlinked basedir outside of the root.
    This vulnerability appears to have been fixed in     2.7.6.(CVE-2018-1000073)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a     Deserialization of Untrusted Data vulnerability in     owner command that can result in code execution. This     attack appear to be exploitable via victim must run the     `gem owner` command on a gem with a specially crafted     YAML file. This vulnerability appears to have been     fixed in 2.7.6.(CVE-2018-1000074)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Improper Input     Validation vulnerability in ruby gems specification     homepage attribute that can result in a malicious gem     could set an invalid homepage URL. This vulnerability     appears to have been fixed in 2.7.6.(CVE-2018-1000077)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Cross Site     Scripting (XSS) vulnerability in gem server display of     homepage attribute that can result in XSS. This attack     appear to be exploitable via the victim must browse to     a malicious gem on a vulnerable gem server. This     vulnerability appears to have been fixed in     2.7.6.(CVE-2018-1000078)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in gem installation that can     result in the gem could write to arbitrary filesystem     locations during installation. This attack appear to be     exploitable via the victim must install a malicious     gem. This vulnerability appears to have been fixed in     2.7.6.(CVE-2018-1000079)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the ruby packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - An issue was discovered in Oniguruma 6.2.0, as used in     Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP     through 7.1.5. A SIGSEGV occurs in     left_adjust_char_head() during regular expression     compilation. Invalid handling of reg->dmax in     forward_search_range() could result in an invalid     pointer dereference, normally as an immediate     denial-of-service condition.(CVE-2017-9229)

  - An issue was discovered in Oniguruma 6.2.0, as used in     Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP     through 7.1.5. A stack out-of-bounds read occurs in     mbc_enc_len() during regular expression searching.
    Invalid handling of reg->dmin in forward_search_range()     could result in an invalid pointer dereference, as an     out-of-bounds read from a stack buffer.(CVE-2017-9227)

  - An issue was discovered in Oniguruma 6.2.0, as used in     Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP     through 7.1.5. A heap out-of-bounds write occurs in     bitset_set_range() during regular expression     compilation due to an uninitialized variable from an     incorrect state transition. An incorrect state     transition in parse_char_class() could create an     execution path that leaves a critical local variable     uninitialized until it's used as an index, resulting in     an out-of-bounds write memory     corruption.(CVE-2017-9228)

  - An issue was discovered in Oniguruma 6.2.0, as used in     Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP     through 7.1.5. A stack out-of-bounds read occurs in     match_at() during regular expression searching. A     logical error involving order of validation and access     in match_at() could result in an out-of-bounds read     from a stack buffer.(CVE-2017-9224)

  - A SMTP command injection flaw was found in the way     Ruby's Net::SMTP module handled CRLF sequences in     certain SMTP commands. An attacker could potentially     use this flaw to inject SMTP commands in a SMTP session     in order to facilitate phishing attacks or spam     campaigns.(CVE-2015-9096)

  - The openssl gem for Ruby uses the same initialization     vector (IV) in GCM Mode (aes-*-gcm) when the IV is set     before the key, which makes it easier for     context-dependent attackers to bypass the encryption     protection mechanism.(CVE-2016-7798)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in gem installation that can     result in the gem could write to arbitrary filesystem     locations during installation. This attack appear to be     exploitable via the victim must install a malicious     gem. This vulnerability appears to have been fixed in     2.7.6.(CVE-2018-1000079)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Cross Site     Scripting (XSS) vulnerability in gem server display of     homepage attribute that can result in XSS. This attack     appear to be exploitable via the victim must browse to     a malicious gem on a vulnerable gem server. This     vulnerability appears to have been fixed in     2.7.6.(CVE-2018-1000078)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Improper Input     Validation vulnerability in ruby gems specification     homepage attribute that can result in a malicious gem     could set an invalid homepage URL. This vulnerability     appears to have been fixed in 2.7.6.(CVE-2018-1000077)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a     Deserialization of Untrusted Data vulnerability in     owner command that can result in code execution. This     attack appear to be exploitable via victim must run the     `gem owner` command on a gem with a specially crafted     YAML file. This vulnerability appears to have been     fixed in 2.7.6.(CVE-2018-1000074)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in install_location function of     package.rb that can result in path traversal when     writing to a symlinked basedir outside of the root.
    This vulnerability appears to have been fixed in     2.7.6.(CVE-2018-1000073)

  - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an     HTTP Response Splitting attack. An attacker can inject     a crafted key and value into an HTTP response for the     HTTP server of WEBrick.(CVE-2017-17742)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for ruby2.1 fixes the following issues :

Security issues fixed :

CVE-2015-9096: Fixed an SMTP command injection via CRLFsequences in a RCPT TO or MAIL FROM command (bsc#1043983).

CVE-2016-7798: Fixed an IV Reuse in GCM Mode (bsc#1055265).

CVE-2017-0898: Fixed a buffer underrun vulnerability in Kernel.sprintf (bsc#1058755).

CVE-2017-0899: Fixed an issue with malicious gem specifications, insufficient sanitation when printing gem specifications could have included terminal characters (bsc#1056286).

CVE-2017-0900: Fixed an issue with malicious gem specifications, the query command could have led to a denial of service attack against clients (bsc#1056286).

CVE-2017-0901: Fixed an issue with malicious gem specifications, potentially overwriting arbitrary files on the client system (bsc#1056286).

CVE-2017-0902: Fixed an issue with malicious gem specifications, that could have enabled MITM attacks against clients (bsc#1056286).

CVE-2017-0903: Fixed an unsafe object deserialization vulnerability (bsc#1062452).

CVE-2017-9228: Fixed a heap out-of-bounds write in bitset_set_range() during regex compilation (bsc#1069607).

CVE-2017-9229: Fixed an invalid pointer dereference in left_adjust_char_head() in oniguruma (bsc#1069632).

CVE-2017-10784: Fixed an escape sequence injection vulnerability in the Basic authentication of WEBrick (bsc#1058754).

CVE-2017-14033: Fixed a buffer underrun vulnerability in OpenSSL ASN1 decode (bsc#1058757).

CVE-2017-14064: Fixed an arbitrary memory exposure during a JSON.generate call (bsc#1056782).

CVE-2017-17405: Fixed a command injection vulnerability in Net::FTP (bsc#1073002).

CVE-2017-17742: Fixed an HTTP response splitting issue in WEBrick (bsc#1087434).

CVE-2017-17790: Fixed a command injection in lib/resolv.rb:lazy_initialize() (bsc#1078782).

CVE-2018-6914: Fixed an unintentional file and directory creation with directory traversal in tempfile and tmpdir (bsc#1087441).

CVE-2018-8777: Fixed a potential DoS caused by large requests in WEBrick (bsc#1087436).

CVE-2018-8778: Fixed a buffer under-read in String#unpack (bsc#1087433).

CVE-2018-8779: Fixed an unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket (bsc#1087440).

CVE-2018-8780: Fixed an unintentional directory traversal by poisoned NUL byte in Dir (bsc#1087437).

CVE-2018-16395: Fixed an issue with OpenSSL::X509::Name equality checking (bsc#1112530).

CVE-2018-16396: Fixed an issue with tainted string handling, where the flag was not propagated in Array#pack and String#unpack with some directives (bsc#1112532).

CVE-2018-1000073: Fixed a path traversal issue (bsc#1082007).

CVE-2018-1000074: Fixed an unsafe object deserialization vulnerability in gem owner, allowing arbitrary code execution with specially crafted YAML (bsc#1082008).

CVE-2018-1000075: Fixed an infinite loop vulnerability due to negative size in tar header causes Denial of Service (bsc#1082014).

CVE-2018-1000076: Fixed an improper verification of signatures in tarballs (bsc#1082009).

CVE-2018-1000077: Fixed an improper URL validation in the homepage attribute of ruby gems (bsc#1082010).

CVE-2018-1000078: Fixed a XSS vulnerability in the homepage attribute when displayed via gem server (bsc#1082011).

CVE-2018-1000079: Fixed a path traversal issue during gem installation allows to write to arbitrary filesystem locations (bsc#1082058).

CVE-2019-8320: Fixed a directory traversal issue when decompressing tar files (bsc#1130627).

CVE-2019-8321: Fixed an escape sequence injection vulnerability in verbose (bsc#1130623).

CVE-2019-8322: Fixed an escape sequence injection vulnerability in gem owner (bsc#1130622).

CVE-2019-8323: Fixed an escape sequence injection vulnerability in API response handling (bsc#1130620).

CVE-2019-8324: Fixed an issue with malicious gems that may have led to arbitrary code execution (bsc#1130617).

CVE-2019-8325: Fixed an escape sequence injection vulnerability in errors (bsc#1130611).

CVE-2019-15845: Fixed a NUL injection vulnerability in File.fnmatch and File.fnmatch? (bsc#1152994).

CVE-2019-16201: Fixed a regular expression denial of service vulnerability in WEBrick's digest access authentication (bsc#1152995).

CVE-2019-16254: Fixed an HTTP response splitting vulnerability in WEBrick (bsc#1152992).

CVE-2019-16255: Fixed a code injection vulnerability in Shell#[] and Shell#test (bsc#1152990).

CVE-2020-10663: Fixed an unsafe object creation vulnerability in JSON (bsc#1171517).

Non-security issue fixed :

Add conflicts to libruby to make sure ruby and ruby-stdlib are also updated when libruby is updated (bsc#1048072).

Also yast2-ruby-bindings on SLES 12 SP2 LTSS was updated to handle the updated ruby interpreter. (bsc#1172275)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0663 advisory.

    Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text     files and to perform system management tasks.

    Security Fix(es):

    * ruby: DoS by large request in WEBrick (CVE-2018-8777)

    * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)

    * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)

    * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on     specially crafted YAML (CVE-2018-1000074)

    * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem     (CVE-2018-1000076)

    * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage     URL (CVE-2018-1000077)

    * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)

    * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations     (CVE-2018-1000079)

    * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service     (CVE-2018-1000075)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Multiple vulnerabilities were found in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following issues :

CVE-2015-9096

SMTP command injection in Net::SMTP via CRLF sequences in a RCPT TO or MAIL FROM command.

CVE-2016-2339

Exploitable heap overflow in Fiddle::Function.new.

CVE-2016-7798

Incorrect handling of initialization vector in the GCM mode in the OpenSSL extension.

CVE-2017-0898

Buffer underrun vulnerability in Kernel.sprintf.

CVE-2017-0899

ANSI escape sequence vulnerability in RubyGems.

CVE-2017-0900

DoS vulnerability in the RubyGems query command.

CVE-2017-0901

gem installer allowed a malicious gem to overwrite arbitrary files.

CVE-2017-0902

RubyGems DNS request hijacking vulnerability.

CVE-2017-0903

Max Justicz reported that RubyGems is prone to an unsafe object deserialization vulnerability. When parsed by an application which processes gems, a specially crafted YAML formatted gem specification can lead to remote code execution.

CVE-2017-10784

Yusuke Endoh discovered an escape sequence injection vulnerability in the Basic authentication of WEBrick. An attacker can take advantage of this flaw to inject malicious escape sequences to the WEBrick log and potentially execute control characters on the victim's terminal emulator when reading logs.

CVE-2017-14033

asac reported a buffer underrun vulnerability in the OpenSSL extension. A remote attacker could take advantage of this flaw to cause the Ruby interpreter to crash leading to a denial of service.

CVE-2017-14064

Heap memory disclosure in the JSON library.

CVE-2017-17405

A command injection vulnerability in Net::FTP might allow a malicious FTP server to execute arbitrary commands.

CVE-2017-17742

Aaron Patterson reported that WEBrick bundled with Ruby was vulnerable to an HTTP response splitting vulnerability. It was possible for an attacker to inject fake HTTP responses if a script accepted an external input and output it without modifications.

CVE-2017-17790

A command injection vulnerability in lib/resolv.rb's lazy_initialze might allow a command injection attack. However untrusted input to this function is rather unlikely.

CVE-2018-6914

ooooooo_q discovered a directory traversal vulnerability in the Dir.mktmpdir method in the tmpdir library. It made it possible for attackers to create arbitrary directories or files via a .. (dot dot) in the prefix argument.

CVE-2018-8777

Eric Wong reported an out-of-memory DoS vulnerability related to a large request in WEBrick bundled with Ruby.

CVE-2018-8778

aerodudrizzt found a buffer under-read vulnerability in the Ruby String#unpack method. If a big number was passed with the specifier @, the number was treated as a negative value, and an out-of-buffer read occurred. Attackers could read data on heaps if an script accepts an external input as the argument of String#unpack.

CVE-2018-8779

ooooooo_q reported that the UNIXServer.open and UNIXSocket.open methods of the socket library bundled with Ruby did not check for NUL bytes in the path argument. The lack of check made the methods vulnerable to unintentional socket creation and unintentional socket access.

CVE-2018-8780

ooooooo_q discovered an unintentional directory traversal in some methods in Dir, by the lack of checking for NUL bytes in their parameter.

CVE-2018-1000075

A negative size vulnerability in ruby gem package tar header that could cause an infinite loop.

CVE-2018-1000076

RubyGems package improperly verifies cryptographic signatures. A mis-signed gem could be installed if the tarball contains multiple gem signatures.

CVE-2018-1000077

An improper input validation vulnerability in RubyGems specification homepage attribute could allow malicious gem to set an invalid homepage URL.

CVE-2018-1000078

Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute.

CVE-2018-1000079

Path Traversal vulnerability during gem installation.

For Debian 8 'Jessie', these problems have been fixed in version 2.1.5-2+deb8u4.

We recommend that you upgrade your ruby2.1 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Path traversal when writing to a symlinked basedir outside of the root

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073)

Improper verification of signatures in tarball allows to install mis-signed gem :

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076)

Infinite loop vulnerability due to negative size in tar header causes Denial of Service

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075)

Command injection in lib/resolv.rb:lazy_initialize() allows arbitrary code execution :

The 'lazy_initialize' function in lib/resolv.rb did not properly process certain filenames. A remote attacker could possibly exploit this flaw to inject and execute arbitrary commands. (CVE-2017-17790)

Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL :

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000077)

XSS vulnerability in homepage attribute when displayed via gem server

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000078)

Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000074)

Path traversal issue during gem installation allows to write to arbitrary filesystem locations

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000079)

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has ruby packages installed that are affected by multiple vulnerabilities:

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an     attacker controlling the unpacking format (similar to     format string vulnerabilities) can trigger a buffer     under-read in the String#unpack method, resulting in a     massive and controlled information disclosure.
    (CVE-2018-8778)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in install_location function of     package.rb that can result in path traversal when     writing to a symlinked basedir outside of the root. This     vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000073)

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the     Dir.open, Dir.new, Dir.entries and Dir.empty? methods do     not check NULL characters. When using the corresponding     method, unintentional directory traversal may be     performed. (CVE-2018-8780)

  - Directory traversal vulnerability in the Dir.mktmpdir     method in the tmpdir library in Ruby before 2.2.10,     2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before     2.5.1, and 2.6.0-preview1 might allow attackers to     create arbitrary directories or files via a .. (dot dot)     in the prefix argument. (CVE-2018-6914)

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an     attacker can pass a large HTTP request with a crafted     header to WEBrick server or a crafted body to WEBrick     server/handler and cause a denial of service (memory     consumption). (CVE-2018-8777)

  - Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an     HTTP Response Splitting attack. An attacker can inject a     crafted key and value into an HTTP response for the HTTP     server of WEBrick. (CVE-2017-17742)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Deserialization     of Untrusted Data vulnerability in owner command that     can result in code execution. This attack appear to be     exploitable via victim must run the `gem owner` command     on a gem with a specially crafted YAML file. This     vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000074)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Cross Site     Scripting (XSS) vulnerability in gem server display of     homepage attribute that can result in XSS. This attack     appear to be exploitable via the victim must browse to a     malicious gem on a vulnerable gem server. This     vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000078)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Directory     Traversal vulnerability in gem installation that can     result in the gem could write to arbitrary filesystem     locations during installation. This attack appear to be     exploitable via the victim must install a malicious gem.
    This vulnerability appears to have been fixed in 2.7.6.
    (CVE-2018-1000079)

  - An issue was discovered in Ruby before 2.3.8, 2.4.x     before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before     2.6.0-preview3. It does not taint strings that result     from unpacking tainted strings with some formats.
    (CVE-2018-16396)

  - In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before     2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the     UNIXServer.open and UNIXSocket.open methods are not     checked for null characters. It may be connected to an     unintended socket. (CVE-2018-8779)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a infinite loop     caused by negative size vulnerability in ruby gem     package tar header that can result in a negative size     could cause an infinite loop.. This vulnerability     appears to have been fixed in 2.7.6. (CVE-2018-1000075)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Improper     Verification of Cryptographic Signature vulnerability in     package.rb that can result in a mis-signed gem could be     installed, as the tarball would contain multiple gem     signatures.. This vulnerability appears to have been     fixed in 2.7.6. (CVE-2018-1000076)

  - RubyGems version Ruby 2.2 series: 2.2.9 and earlier,     Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series:
    2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier,     prior to trunk revision 62422 contains a Improper Input     Validation vulnerability in ruby gems specification     homepage attribute that can result in a malicious gem     could set an invalid homepage URL. This vulnerability     appears to have been fixed in 2.7.6. (CVE-2018-1000077)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It was found that WEBrick could be forced to use an excessive amount of memory during the processing of HTTP requests, leading to a Denial of Service. An attacker could use this flaw to send huge requests to a WEBrick application, resulting in the server running out of memory.
(CVE-2018-8777)

It was found that the tmpdir and tempfile modules did not sanitize their file name argument. An attacker with control over the name could create temporary files and directories outside of the dedicated directory. (CVE-2018-6914)

It was found that WEBrick did not sanitize headers sent back to clients, resulting in a response-splitting vulnerability. An attacker, able to control the server's headers, could force WEBrick into injecting additional headers to a client. (CVE-2017-17742)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in install_location function of package.rb that can result in path traversal when writing to a symlinked basedir outside of the root. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000073)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000076)

It was found that the methods from the Dir class did not properly handle strings containing the NULL byte. An attacker, able to inject NULL bytes in a path, could possibly trigger an unspecified behavior of the ruby script. (CVE-2018-8780)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000075)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000078)

An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.
(CVE-2018-16396)

A integer underflow was found in the way String#unpack decodes the unpacking format. An attacker, able to control the unpack format, could use this flaw to disclose arbitrary parts of the application's memory. (CVE-2018-8778)

It was found that the UNIXSocket::open and UNIXServer::open ruby methods did not handle the NULL byte properly. An attacker, able to inject NULL bytes in the socket path, could possibly trigger an unspecified behavior of the ruby script. (CVE-2018-8779)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000074)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000077)

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series:
2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Directory Traversal vulnerability in gem installation that can result in the gem could write to arbitrary filesystem locations during installation. This attack appear to be exploitable via the victim must install a malicious gem. This vulnerability appears to have been fixed in 2.7.6. (CVE-2018-1000079)

An update for ruby is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

Security Fix(es) :

* ruby: HTTP response splitting in WEBrick (CVE-2017-17742)

* ruby: DoS by large request in WEBrick (CVE-2018-8777)

* ruby: Buffer under-read in String#unpack (CVE-2018-8778)

* ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)

* ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives (CVE-2018-16396)

* rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)

* rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on specially crafted YAML (CVE-2018-1000074)

* rubygems: Improper verification of signatures in tarball allows to install mis-signed gem (CVE-2018-1000076)

* rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL (CVE-2018-1000077)

* rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)

* rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations (CVE-2018-1000079)

* ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (CVE-2018-6914)

* ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779)

* rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service (CVE-2018-1000075)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Multiple vulnerabilities have been discovered in jruby, Java implementation of the Ruby programming language.

CVE-2018-1000074

Deserialization of Untrusted Data vulnerability in owner command that can result in code execution. This attack appear to be exploitable via victim must run the `gem owner` command on a gem with a specially crafted YAML file

CVE-2018-1000075

an infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop

CVE-2018-1000076

Improper Verification of Cryptographic Signature vulnerability in package.rb that can result in a mis-signed gem could be installed, as the tarball would contain multiple gem signatures.

CVE-2018-1000077

Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL

CVE-2018-1000078

Cross Site Scripting (XSS) vulnerability in gem server display of homepage attribute that can result in XSS. This attack appear to be exploitable via the victim must browse to a malicious gem on a vulnerable gem server

CVE-2019-8321

Gem::UserInteraction#verbose calls say without escaping, escape sequence injection is possible

CVE-2019-8322

The gem owner command outputs the contents of the API response directly to stdout. Therefore, if the response is crafted, escape sequence injection may occur

CVE-2019-8323

Gem::GemcutterUtilities#with_response may output the API response to stdout as it is. Therefore, if the API side modifies the response, escape sequence injection may occur.

CVE-2019-8324

A crafted gem with a multi-line name is not handled correctly.
Therefore, an attacker could inject arbitrary code to the stub line of gemspec

CVE-2019-8325

Gem::CommandManager#run calls alert_error without escaping, escape sequence injection is possible. (There are many ways to cause an error.)

For Debian 8 'Jessie', these problems have been fixed in version 1.5.6-9+deb8u1.

We recommend that you upgrade your jruby packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2019-3613:01 advisory.

    * ruby: OpenSSL::X509::Name equality check does not work correctly (CVE-2018-16395)
    * ruby: HTTP response splitting in WEBrick (CVE-2017-17742)
    * ruby: DoS by large request in WEBrick (CVE-2018-8777)
    * ruby: Buffer under-read in String#unpack (CVE-2018-8778)
    * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)
    * ruby: Tainted flags are not propagated in Array#pack and String#unpack with some directives     (CVE-2018-16396)
    * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)
    * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on     specially crafted YAML (CVE-2018-1000074)
    * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem     (CVE-2018-1000076)
    * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage     URL (CVE-2018-1000077)
    * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)
    * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations     (CVE-2018-1000079)
    * ruby: Unintentional file and directory creation with directory traversal in tempfile and tmpdir     (CVE-2018-6914)
    * ruby: Unintentional socket creation by poisoned NULL byte in UNIXServer and UNIXSocket (CVE-2018-8779)
    * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service     (CVE-2018-1000075)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:0542 advisory.

    Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text     files and to perform system management tasks.

    Security Fix(es):

    * ruby: DoS by large request in WEBrick (CVE-2018-8777)

    * ruby: Unintentional directory traversal by poisoned NULL byte in Dir (CVE-2018-8780)

    * rubygems: Path traversal when writing to a symlinked basedir outside of the root (CVE-2018-1000073)

    * rubygems: Unsafe Object Deserialization Vulnerability in gem owner allowing arbitrary code execution on     specially crafted YAML (CVE-2018-1000074)

    * rubygems: Improper verification of signatures in tarball allows to install mis-signed gem     (CVE-2018-1000076)

    * rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage     URL (CVE-2018-1000077)

    * rubygems: XSS vulnerability in homepage attribute when displayed via gem server (CVE-2018-1000078)

    * rubygems: Path traversal issue during gem installation allows to write to arbitrary filesystem locations     (CVE-2018-1000079)

    * rubygems: Infinite loop vulnerability due to negative size in tar header causes Denial of Service     (CVE-2018-1000075)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
108788	Debian DLA-1337-1 : jruby security update	Nessus	Debian Local Security Checks	2018/4/3	2024/11/21	critical
130692	EulerOS 2.0 SP5 : ruby (EulerOS-SA-2019-2230)	Nessus	Huawei Local Security Checks	2019/11/8	2024/4/15	high
134484	EulerOS Virtualization for ARM 64 3.0.2.0 : ruby (EulerOS-SA-2020-1195)	Nessus	Huawei Local Security Checks	2020/3/13	2024/3/22	critical
137599	SUSE SLES12 Security Update : ruby2.1 (SUSE-SU-2020:1570-1)	Nessus	SuSE Local Security Checks	2020/6/18	2022/5/13	critical
134261	RHEL 7 : ruby (RHSA-2020:0663)	Nessus	Red Hat Local Security Checks	2020/3/6	2024/11/7	critical
111081	Debian DLA-1421-1 : ruby2.1 security update	Nessus	Debian Local Security Checks	2018/7/16	2024/9/4	critical
109136	Amazon Linux 2 : ruby (ALAS-2018-983)	Nessus	Amazon Linux Local Security Checks	2018/4/18	2024/10/30	critical
132492	NewStart CGSL CORE 5.05 / MAIN 5.05 : ruby Multiple Vulnerabilities (NS-SA-2019-0245)	Nessus	NewStart CGSL Local Security Checks	2019/12/31	2022/5/18	critical
128290	Amazon Linux 2 : ruby (ALAS-2019-1276)	Nessus	Amazon Linux Local Security Checks	2019/8/28	2024/5/1	critical
128332	CentOS 7 : ruby (CESA-2019:2028)	Nessus	CentOS Local Security Checks	2019/8/30	2022/5/19	critical
125297	Debian DLA-1796-1 : jruby security update	Nessus	Debian Local Security Checks	2019/5/21	2024/5/21	critical
289679	MiracleLinux 7 : rh-ruby25-ruby-2.5.3-6.el7 (AXSA:2019-3613:01)	Nessus	Miracle Linux Local Security Checks	2026/1/16	2026/1/16	critical
133785	RHEL 7 : ruby (RHSA-2020:0542)	Nessus	Red Hat Local Security Checks	2020/2/19	2024/11/7	critical

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