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

  - An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::UserInteraction#verbose calls     say without escaping, escape sequence injection is possible. (CVE-2019-8321)

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

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

  - An issue was discovered in RubyGems 2.6 and later     through 3.0.2. Since Gem::UserInteraction#verbose calls     say without escaping, escape sequence injection is     possible.(CVE-2019-8321)

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.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1429 advisory.

    Red Hat CloudForms Management Engine delivers the insight, control, and automation needed to address the     challenges of managing virtual environments. CloudForms Management Engine is built on Ruby on Rails, a     model-view-controller (MVC) framework for web application development. Action Pack implements the     controller and the view components.

    Security Fix(es):

    * rubygems: Installing a malicious gem may lead to arbitrary code execution (CVE-2019-8324)

    * rubygems: Delete directory using symlink when decompressing tar (CVE-2019-8320)

    * rubygems: Escape sequence injection vulnerability in verbose (CVE-2019-8321)

    * rubygems: Escape sequence injection vulnerability in gem owner (CVE-2019-8322)

    * rubygems: Escape sequence injection vulnerability in API response handling (CVE-2019-8323)

    * rubygems: Escape sequence injection vulnerability in errors (CVE-2019-8325)

    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:

    This update fixes various bugs and adds enhancements. Documentation for these changes is available from     the Release Notes document linked to 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 remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1148 advisory.

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

    The following packages have been upgraded to a later upstream version: rh-ruby25-ruby (2.5.5).
    (BZ#1700274)

    Security Fix(es):

    * rubygems: Installing a malicious gem may lead to arbitrary code execution (CVE-2019-8324)

    * rubygems: Delete directory using symlink when decompressing tar (CVE-2019-8320)

    * rubygems: Escape sequence injection vulnerability in verbose (CVE-2019-8321)

    * rubygems: Escape sequence injection vulnerability in gem owner (CVE-2019-8322)

    * rubygems: Escape sequence injection vulnerability in API response handling (CVE-2019-8323)

    * rubygems: Escape sequence injection vulnerability in errors (CVE-2019-8325)

    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 remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1150 advisory.

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

    The following packages have been upgraded to a later upstream version: rh-ruby24-ruby (2.4.6).
    (BZ#1700275)

    Security Fix(es):

    * rubygems: Installing a malicious gem may lead to arbitrary code execution (CVE-2019-8324)

    * rubygems: Delete directory using symlink when decompressing tar (CVE-2019-8320)

    * rubygems: Escape sequence injection vulnerability in verbose (CVE-2019-8321)

    * rubygems: Escape sequence injection vulnerability in gem owner (CVE-2019-8322)

    * rubygems: Escape sequence injection vulnerability in API response handling (CVE-2019-8323)

    * rubygems: Escape sequence injection vulnerability in errors (CVE-2019-8325)

    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.

Several vulnerabilities were fixed in JRuby, a 100% pure-Java implementation of Ruby.

CVE-2017-17742 CVE-2019-16254

HTTP Response Splitting attacks in the HTTP server of WEBrick.

CVE-2019-16201

Regular Expression Denial of Service vulnerability of WEBrick's Digest access authentication.

CVE-2019-8320

Delete directory using symlink when decompressing tar.

CVE-2019-8321

Escape sequence injection vulnerability in verbose.

CVE-2019-8322

Escape sequence injection vulnerability in gem owner.

CVE-2019-8323

Escape sequence injection vulnerability in API response handling.

CVE-2019-8324

Installing a malicious gem may lead to arbitrary code execution.

CVE-2019-8325

Escape sequence injection vulnerability in errors.

CVE-2019-16255

Code injection vulnerability of Shell#[] and Shell#test.

For Debian 9 stretch, these problems have been fixed in version 1.7.26-1+deb9u2.

We recommend that you upgrade your jruby packages.

For the detailed security status of jruby please refer to its security tracker page at: https://security-tracker.debian.org/tracker/jruby

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.

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.

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-2020:2769 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):

    * rubygems: Installing a malicious gem may lead to arbitrary code execution (CVE-2019-8324)

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

    * rubygems: Escape sequence injection vulnerability in verbose (CVE-2019-8321)

    * rubygems: Escape sequence injection vulnerability in gem owner (CVE-2019-8322)

    * rubygems: Escape sequence injection vulnerability in API response handling (CVE-2019-8323)

    * rubygems: Escape sequence injection vulnerability in errors (CVE-2019-8325)

    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
253333	Linux Distros Unpatched Vulnerability : CVE-2019-8321	Nessus	Misc.	2025/8/21	2025/8/21	high
128818	EulerOS 2.0 SP5 : ruby (EulerOS-SA-2019-1895)	Nessus	Huawei Local Security Checks	2019/9/16	2024/4/25	high
193687	RHEL 7 : CloudForms 4.7.5 (RHSA-2019:1429)	Nessus	Red Hat Local Security Checks	2024/4/22	2024/11/6	high
193985	RHEL 7 : rh-ruby25-ruby (RHSA-2019:1148)	Nessus	Red Hat Local Security Checks	2024/4/27	2024/11/6	high
194140	RHEL 6 / 7 : rh-ruby24-ruby (RHSA-2019:1150)	Nessus	Red Hat Local Security Checks	2024/4/28	2024/11/6	high
139628	Debian DLA-2330-1 : jruby security update	Nessus	Debian Local Security Checks	2020/8/18	2024/2/26	high
125297	Debian DLA-1796-1 : jruby security update	Nessus	Debian Local Security Checks	2019/5/21	2024/5/21	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
137897	RHEL 7 : ruby (RHSA-2020:2769)	Nessus	Red Hat Local Security Checks	2020/6/30	2024/11/7	high

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