The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2022:0672 advisory.

  - In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute     arbitrary code via | and tags in a filename. (CVE-2021-31799)

  - An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP     server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port.
    This potentially makes curl extract information about services that are otherwise private and not     disclosed (e.g., the attacker can conduct port scans and service banner extractions). (CVE-2021-31810)

  - An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does     not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-     middle attackers to bypass the TLS protections by leveraging a network position between the client and the     registry to block the StartTLS command, aka a StartTLS stripping attack. (CVE-2021-32066)

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

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5020-1 advisory.

    It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue     to execute arbitrary code. (CVE-2021-31799)

    It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue     to conduct port scans and service banner extractions. This issue only affected Ubuntu 18.04 LTS, Ubuntu     20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-31810)

    It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue     to perform machine-in-the-middle attackers to bypass the TLS protection. (CVE-2021-32066)

Tenable has extracted the preceding description block directly from the Ubuntu 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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-3020 advisory.

    ruby     [2.7.4-137]
    - Upgrade to Ruby 2.7.4.
    - Fix command injection vulnerability in RDoc.
      Resolves: rhbz#1986768
    - Fix FTP PASV command response can cause Net::FTP to connect to arbitrary host.
      Resolves: rhbz#1986812
    - Fix StartTLS stripping vulnerability in Net::IMAP.
      Resolves: rhbz#1986813
    - Upgrade to Bundler 2.2.24.
      Resolves: CVE-2020-36327

Tenable has extracted the preceding description block directly from the Oracle 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-2021:3559 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-ruby27-ruby (2.7.4).

    Security Fix(es):

    * rubygem-bundler: Dependencies of gems with explicit source may be installed from a different source     (CVE-2020-36327)

    * rubygem-rdoc: Command injection vulnerability in RDoc (CVE-2021-31799)

    * ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host (CVE-2021-31810)

    * ruby: StartTLS stripping vulnerability in Net::IMAP (CVE-2021-32066)

    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 SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:1535-1 advisory.

  - In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute     arbitrary code via | and tags in a filename. (CVE-2021-31799)

  - An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP     server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port.
    This potentially makes curl extract information about services that are otherwise private and not     disclosed (e.g., the attacker can conduct port scans and service banner extractions). (CVE-2021-31810)

  - An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does     not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-     middle attackers to bypass the TLS protections by leveraging a network position between the client and the     registry to block the StartTLS command, aka a StartTLS stripping attack. (CVE-2021-32066)

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

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2022:0543 advisory.

  - rubygem-bundler: Dependencies of gems with explicit source may be installed from a different source     (CVE-2020-36327)

  - rubygem-rdoc: Command injection vulnerability in RDoc (CVE-2021-31799)

  - ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host (CVE-2021-31810)

  - ruby: StartTLS stripping vulnerability in Net::IMAP (CVE-2021-32066)

  - ruby: Regular expression denial of service vulnerability of Date parsing methods (CVE-2021-41817)

  - ruby: Cookie prefix spoofing in CGI::Cookie.parse (CVE-2021-41819)

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-0672 advisory.

    - Properly fix command injection vulnerability in Rdoc.
      Related: CVE-2021-31799
    - Fix command injection vulnerability in RDoc.
      Resolves: CVE-2021-31799
    - Fix StartTLS stripping vulnerability in Net::IMAP       Resolves: CVE-2021-32066

Tenable has extracted the preceding description block directly from the Oracle 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 Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2021:0054 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2020-36327:
    Bundler 1.16.0 through 2.2.9 and 2.2.11 through 2.2.16 sometimes chooses a dependency source based on the     highest gem version number, which means that a rogue gem found at a public source may be chosen, even if     the intended choice was a private gem that is a dependency of another private gem that is explicitly     depended on by the application. NOTE: it is not correct to use CVE-2021-24105 for every Dependency     Confusion issue in every product.

    CVE-2021-31799:
    In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute     arbitrary code via | and tags in a filename.

    CVE-2021-31810:
    An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP     server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port.
    This potentially makes curl extract information about services that are otherwise private and not     disclosed (e.g., the attacker can conduct port scans and service banner extractions).

    CVE-2021-32066:
    An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does     not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-     middle attackers to bypass the TLS protections by leveraging a network position between the client and the     registry to block the StartTLS command, aka a StartTLS stripping attack.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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	Name	Product	Family	Published	Updated	Severity
184609	Rocky Linux 8 : ruby:2.5 (RLSA-2022:0672)	Nessus	Rocky Linux Local Security Checks	11/6/2023	11/6/2023	high
151924	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS : Ruby vulnerabilities (USN-5020-1)	Nessus	Ubuntu Local Security Checks	7/22/2021	9/3/2025	high
152264	Oracle Linux 8 : ruby:2.7 (ELSA-2021-3020)	Nessus	Oracle Linux Local Security Checks	8/6/2021	11/1/2024	high
153513	RHEL 7 : rh-ruby27-ruby (RHSA-2021:3559)	Nessus	Red Hat Local Security Checks	9/21/2021	11/7/2024	high
155872	openSUSE 15 Security Update : ruby2.5 (openSUSE-SU-2021:1535-1)	Nessus	SuSE Local Security Checks	12/7/2021	11/22/2023	high
158117	CentOS 8 : ruby:2.6 (CESA-2022:0543)	Nessus	CentOS Local Security Checks	2/16/2022	11/8/2023	high
158467	Oracle Linux 8 : ruby:2.5 (ELSA-2022-0672)	Nessus	Oracle Linux Local Security Checks	3/1/2022	11/1/2024	high
236695	Alibaba Cloud Linux 3 : 0054: ruby:2.7 (ALINUX3-SA-2021:0054)	Nessus	Alibaba Cloud Linux Local Security Checks	5/14/2025	5/14/2025	high

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