This update for ruby2.5 and ruby-bundled-gems-rpmhelper fixes the following issues :

Changes in ruby2.5 :

Update to 2.5.5 and 2.5.4 :

https://www.ruby-lang.org/en/news/2019/03/15/ruby-2-5-5-released/ https://www.ruby-lang.org/en/news/2019/03/13/ruby-2-5-4-released/

Security issues fixed :

CVE-2019-8320: Delete directory using symlink when decompressing tar (bsc#1130627)

CVE-2019-8321: Escape sequence injection vulnerability in verbose (bsc#1130623)

CVE-2019-8322: Escape sequence injection vulnerability in gem owner (bsc#1130622)

CVE-2019-8323: Escape sequence injection vulnerability in API response handling (bsc#1130620)

CVE-2019-8324: Installing a malicious gem may lead to arbitrary code execution (bsc#1130617)

CVE-2019-8325: Escape sequence injection vulnerability in errors (bsc#1130611)

Ruby 2.5 was updated to 2.5.3 :

This release includes some bug fixes and some security fixes.

Security issues fixed: CVE-2018-16396: Tainted flags are not propagated in Array#pack and String#unpack with some directives (bsc#1112532)

CVE-2018-16395: OpenSSL::X509::Name equality check does not work correctly (bsc#1112530)

Ruby 2.5 was updated to 2.5.1 :

This release includes some bug fixes and some security fixes.

Security issues fixed: CVE-2017-17742: HTTP response splitting in WEBrick (bsc#1087434)

CVE-2018-6914: Unintentional file and directory creation with directory traversal in tempfile and tmpdir (bsc#1087441)

CVE-2018-8777: DoS by large request in WEBrick (bsc#1087436)

CVE-2018-8778: Buffer under-read in String#unpack (bsc#1087433)

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

CVE-2018-8780: Unintentional directory traversal by poisoned NUL byte in Dir (bsc#1087437)

Multiple vulnerabilities in RubyGems were fixed :

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

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

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

  - CVE-2018-1000077: Fixed that missing URL validation on     spec home attribute allows malicious gem to set an     invalid homepage URL (bsc#1082010)

  - CVE-2018-1000076: Fixed improper verification of     signatures in tarball allows to install mis-signed gem     (bsc#1082009)

  - CVE-2018-1000074: Fixed unsafe Object Deserialization     Vulnerability in gem owner allowing arbitrary code     execution on specially crafted YAML (bsc#1082008)

  - CVE-2018-1000073: Fixed path traversal when writing to a     symlinked basedir outside of the root (bsc#1082007)

Other changes: Fixed Net::POPMail methods modify frozen literal when using default arg

ruby: change over of the Japanese Era to the new emperor May 1st 2019 (bsc#1133790)

build with PIE support (bsc#1130028)

Changes in ruby-bundled-gems-rpmhelper: Add a new helper for bundled ruby gems.

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.

This update for ruby2.5 and ruby-bundled-gems-rpmhelper fixes the following issues :

Changes in ruby2.5 :

Update to 2.5.5 and 2.5.4 :

https://www.ruby-lang.org/en/news/2019/03/15/ruby-2-5-5-released/ https://www.ruby-lang.org/en/news/2019/03/13/ruby-2-5-4-released/

Security issues fixed :

  - CVE-2019-8320: Delete directory using symlink when     decompressing tar (bsc#1130627)

  - CVE-2019-8321: Escape sequence injection vulnerability     in verbose (bsc#1130623)

  - CVE-2019-8322: Escape sequence injection vulnerability     in gem owner (bsc#1130622)

  - CVE-2019-8323: Escape sequence injection vulnerability     in API response handling (bsc#1130620)

  - CVE-2019-8324: Installing a malicious gem may lead to     arbitrary code execution (bsc#1130617)

  - CVE-2019-8325: Escape sequence injection vulnerability     in errors (bsc#1130611)

Ruby 2.5 was updated to 2.5.3 :

This release includes some bug fixes and some security fixes.

Security issues fixed :

  - CVE-2018-16396: Tainted flags are not propagated in     Array#pack and String#unpack with some directives     (bsc#1112532)

  - CVE-2018-16395: OpenSSL::X509::Name equality check does     not work correctly (bsc#1112530)

Ruby 2.5 was updated to 2.5.1 :

This release includes some bug fixes and some security fixes.

Security issues fixed :

  - CVE-2017-17742: HTTP response splitting in WEBrick     (bsc#1087434)

  - CVE-2018-6914: Unintentional file and directory creation     with directory traversal in tempfile and tmpdir     (bsc#1087441)

  - CVE-2018-8777: DoS by large request in WEBrick     (bsc#1087436)

  - CVE-2018-8778: Buffer under-read in String#unpack     (bsc#1087433)

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

  - CVE-2018-8780: Unintentional directory traversal by     poisoned NUL byte in Dir (bsc#1087437)

  - Multiple vulnerabilities in RubyGems were fixed :

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

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

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

  - CVE-2018-1000077: Fixed that missing URL validation on     spec home attribute allows malicious gem to set an     invalid homepage URL (bsc#1082010)

  - CVE-2018-1000076: Fixed improper verification of     signatures in tarball allows to install mis-signed gem     (bsc#1082009)

  - CVE-2018-1000074: Fixed unsafe Object Deserialization     Vulnerability in gem owner allowing arbitrary code     execution on specially crafted YAML (bsc#1082008)

  - CVE-2018-1000073: Fixed path traversal when writing to a     symlinked basedir outside of the root (bsc#1082007)

Other changes :

  - Fixed Net::POPMail methods modify frozen literal when     using default arg

  - ruby: change over of the Japanese Era to the new emperor     May 1st 2019 (bsc#1133790)

  - build with PIE support (bsc#1130028)

Changes in ruby-bundled-gems-rpmhelper :

  - Add a new helper for bundled ruby gems.

This update was imported from the SUSE:SLE-15:Update update project.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3731 advisory.

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

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

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

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

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

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

  - ruby: OpenSSL::X509::Name equality check does not work correctly (CVE-2018-16395)

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

  - 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)

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

Ruby news :

CVE-2017-17742: HTTP response splitting in WEBrick

If a script accepts an external input and outputs it without modification as a part of HTTP responses, an attacker can use newline characters to deceive the clients that the HTTP response header is stopped at there, and can inject fake HTTP responses after the newline characters to show malicious contents to the clients.

CVE-2018-6914: Unintentional file and directory creation with directory traversal in tempfile and tmpdir

Dir.mktmpdir method introduced by tmpdir library accepts the prefix and the suffix of the directory which is created as the first parameter. The prefix can contain relative directory specifiers '../', so this method can be used to target any directory. So, if a script accepts an external input as the prefix, and the targeted directory has inappropriate permissions or the ruby process has inappropriate privileges, the attacker can create a directory or a file at any directory.

CVE-2018-8777: DoS by large request in WEBrick

If an attacker sends a large request which contains huge HTTP headers, WEBrick try to process it on memory, so the request causes the out-of-memory DoS attack.

CVE-2018-8778: Buffer under-read in String#unpack

String#unpack receives format specifiers as its parameter, and can be specified the position of parsing the data by the specifier @. If a big number is passed with @, the number is treated as the negative value, and out-of-buffer read is occurred. So, if a script accepts an external input as the argument of String#unpack, the attacker can read data on heaps.

CVE-2018-8779: Unintentional socket creation by poisoned NUL byte in UNIXServer and UNIXSocket

UNIXServer.open accepts the path of the socket to be created at the first parameter. If the path contains NUL (\0) bytes, this method recognize that the path is completed before the NUL bytes. So, if a script accepts an external input as the argument of this method, the attacker can make the socket file in the unintentional path. And, UNIXSocket.open also accepts the path of the socket to be created at the first parameter without checking NUL bytes like UNIXServer.open.
So, if a script accepts an external input as the argument of this method, the attacker can accepts the socket file in the unintentional path.

CVE-2018-8780: Unintentional directory traversal by poisoned NUL byte in Dir

Dir.open, Dir.new, Dir.entries and Dir.empty? accept the path of the target directory as their parameter. If the parameter contains NUL (\0) bytes, these methods recognize that the path is completed before the NUL bytes. So, if a script accepts an external input as the argument of these methods, the attacker can make the unintentional directory traversal.

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.

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

  - Ruby 1.8.7 before patchlevel 371, 1.9.3 before     patchlevel 286, and 2.0 before revision r37068 allows     context-dependent attackers to bypass safe-level     restrictions and modify untainted strings via the     name_err_mesg_to_str API function, which marks the     string as tainted, a different vulnerability than     CVE-2011-1005.(CVE-2012-4466)

  - The REXML parser in Ruby 1.9.x before 1.9.3 patchlevel     551, 2.0.x before 2.0.0 patchlevel 598, and 2.1.x     before 2.1.5 allows remote attackers to cause a denial     of service (CPU and memory consumption) a crafted XML     document containing an empty string in an entity that     is used in a large number of nested entity references,     aka an XML Entity Expansion (XEE) attack. NOTE: this     vulnerability exists because of an incomplete fix for     CVE-2013-1821 and CVE-2014-8080.(CVE-2014-8090)

  - Algorithmic complexity vulnerability in     Gem::Version::VERSION_PATTERN in     lib/rubygems/version.rb in RubyGems before 1.8.23.1,     1.8.24 through 1.8.25, 2.0.x before 2.0.8, and 2.1.x     before 2.1.0, as used in Ruby 1.9.0 through 2.0.0p247,     allows remote attackers to cause a denial of service     (CPU consumption) via a crafted gem version that     triggers a large amount of backtracking in a regular     expression.(CVE-2013-4287)

  - The REXML parser in Ruby 1.9.x before 1.9.3-p550, 2.0.x     before 2.0.0-p594, and 2.1.x before 2.1.4 allows remote     attackers to cause a denial of service (memory     consumption) via a crafted XML document, aka an XML     Entity Expansion (XEE) attack.(CVE-2014-8080)

  - The OpenSSL::SSL.verify_certificate_identity function     in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374,     1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does     not properly handle a '\\0' character in a domain name     in the Subject Alternative Name field of an X.509     certificate, which allows man-in-the-middle attackers     to spoof arbitrary SSL servers via a crafted     certificate issued by a legitimate Certification     Authority, a related issue to     CVE-2009-2408.(CVE-2013-4073)

  - The rb_get_path_check function in file.c in Ruby 1.9.3     before patchlevel 286 and Ruby 2.0.0 before r37163     allows context-dependent attackers to create files in     unexpected locations or with unexpected names via a NUL     byte in a file path.(CVE-2012-4522)

  - (1) DL and (2) Fiddle in Ruby 1.9 before 1.9.3     patchlevel 426, and 2.0 before 2.0.0 patchlevel 195, do     not perform taint checking for native functions, which     allows context-dependent attackers to bypass intended     $SAFE level restrictions.(CVE-2013-2065)

  - Algorithmic complexity vulnerability in     Gem::Version::ANCHORED_VERSION_PATTERN in     lib/rubygems/version.rb in RubyGems before 1.8.23.2,     1.8.24 through 1.8.26, 2.0.x before 2.0.10, and 2.1.x     before 2.1.5, as used in Ruby 1.9.0 through 2.0.0p247,     allows remote attackers to cause a denial of service     (CPU consumption) via a crafted gem version that     triggers a large amount of backtracking in a regular     expression. NOTE: this issue is due to an incomplete     fix for CVE-2013-4287.(CVE-2013-4363)

  - Ruby (aka CRuby) 1.9 before 1.9.3-p327 and 2.0 before     r37575 computes hash values without properly     restricting the ability to trigger hash collisions     predictably, which allows context-dependent attackers     to cause a denial of service (CPU consumption) via     crafted input to an application that maintains a hash     table, as demonstrated by a universal multicollision     attack against a variant of the MurmurHash2 algorithm,     a different vulnerability than     CVE-2011-4815.(CVE-2012-5371)

  - Off-by-one error in the encodes function in pack.c in     Ruby 1.9.3 and earlier, and 2.x through 2.1.2, when     using certain format string specifiers, allows     context-dependent attackers to cause a denial of     service (segmentation fault) via vectors that trigger a     stack-based buffer overflow.(CVE-2014-4975)

  - Heap-based buffer overflow in Ruby 1.8, 1.9 before     1.9.3-p484, 2.0 before 2.0.0-p353, 2.1 before 2.1.0     preview2, and trunk before revision 43780 allows     context-dependent attackers to cause a denial of     service (segmentation fault) and possibly execute     arbitrary code via a string that is converted to a     floating point value, as demonstrated using (1) the     to_f method or (2) JSON.parse.(CVE-2013-4164)

  - 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)

  - Ruby 1.9.3 before patchlevel 286 and 2.0 before     revision r37068 allows context-dependent attackers to     bypass safe-level restrictions and modify untainted     strings via the (1) exc_to_s or (2) name_err_to_s API     function, which marks the string as tainted, a     different vulnerability than CVE-2012-4466. NOTE: this     issue might exist because of a CVE-2011-1005     regression.(CVE-2012-4464)

  - An issue was discovered in the OpenSSL library 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. When two     OpenSSL::X509::Name objects are compared using ==,     depending on the ordering, non-equal objects may return     true. When the first argument is one character longer     than the second, or the second argument contains a     character that is one less than a character in the same     position of the first argument, the result of == will     be true. This could be leveraged to create an     illegitimate certificate that may be accepted as     legitimate and then used in signing or encryption     operations.(CVE-2018-16395)

  - 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)

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.

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.

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.

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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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)

Note that Nessus relies on the presence of the package as reported by the vendor.

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 host is running Mac OS X 10.12.6 and is missing a security update. It is therefore, affected by multiple vulnerabilities affecting the following components :

  - afpserver
  - AppleGraphicsControl
  - APR
  - ATS
  - CFNetwork
  - CoreAnimation
  - CoreCrypto
  - CoreFoundation
  - CUPS
  - Dictionary
  - dyld
  - Foundation
  - Heimdal
  - Hypervisor
  - ICU
  - Intel Graphics Driver
  - IOGraphics
  - IOHIDFamily
  - IOKit
  - IOUserEthernet
  - IPSec
  - Kernel
  - Login Window
  - mDNSOffloadUserClient
  - MediaRemote
  - Microcode
  - Perl
  - Ruby
  - Security
  - Spotlight
  - Symptom Framework
  - WiFi

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
126617	SUSE SLED15 / SLES15 Security Update : ruby-bundled-gems-rpmhelper, ruby2.5 (SUSE-SU-2019:1804-1)	Nessus	SuSE Local Security Checks	2019/7/11	2024/5/10	critical
126904	openSUSE Security Update : ruby-bundled-gems-rpmhelper / ruby2.5 (openSUSE-2019-1771)	Nessus	SuSE Local Security Checks	2019/7/22	2024/5/9	critical
194050	RHEL 7 : rh-ruby25-ruby (RHSA-2018:3731)	Nessus	Red Hat Local Security Checks	2024/4/27	2024/4/27	critical
108739	FreeBSD : ruby -- multiple vulnerabilities (eb69bcf2-18ef-4aa2-bb0c-83b263364089)	Nessus	FreeBSD Local Security Checks	2018/3/30	2024/11/22	critical
111081	Debian DLA-1421-1 : ruby2.1 security update	Nessus	Debian Local Security Checks	2018/7/16	2024/9/4	critical
124931	EulerOS Virtualization 3.0.1.0 : ruby (EulerOS-SA-2019-1428)	Nessus	Huawei Local Security Checks	2019/5/14	2024/5/23	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
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
133785	RHEL 7 : ruby (RHSA-2020:0542)	Nessus	Red Hat Local Security Checks	2020/2/19	2024/11/7	critical
222646	Linux Distros Unpatched Vulnerability : CVE-2018-8780	Nessus	Misc.	2025/3/4	2025/8/18	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
118573	macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-005)	Nessus	MacOS X Local Security Checks	2018/10/31	2024/5/28	critical

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