The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3020 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):

    * 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 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.

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

  - 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 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 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.

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

  - The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not     properly address XML round-trip issues. An incorrect document can be produced after parsing and     serializing. (CVE-2021-28965)

  - 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. 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 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 installation on the remote host is affected by the following vulnerabilities :

  - 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 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 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:0544 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):

    * 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)

    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 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 version of ruby installed on the remote host is prior to 3.0.2-149. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2RUBY3.0-2023-005 advisory.

    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)

Tenable has extracted the preceding description block directly from the tested product 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 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 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.

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2022:0176 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2022-28739:
    There is a buffer over-read in Ruby before 2.6.10, 2.7.x before 2.7.6, 3.x before 3.0.4, and 3.1.x before     3.1.2. It occurs in String-to-Float conversion, including Kernel#Float and String#to_f.

    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-2021-41817:
    Date.parse in the date gem through 3.2.0 for Ruby allows ReDoS (regular expression Denial of Service) via     a long string. The fixed versions are 3.2.1, 3.1.2, 3.0.2, and 2.0.1.

    CVE-2021-41819:
    CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects     the CGI gem through 0.3.0 for Ruby.

    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-2022-28738:
    A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a     victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to     unexpected memory locations.

    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 Tencent 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
152354	RHEL 8 : ruby:2.7 (RHSA-2021:3020)	Nessus	Red Hat Local Security Checks	2021/8/9	2024/11/7	high
153513	RHEL 7 : rh-ruby27-ruby (RHSA-2021:3559)	Nessus	Red Hat Local Security Checks	2021/9/21	2024/11/7	high
154369	EulerOS 2.0 SP3 : ruby (EulerOS-SA-2021-2614)	Nessus	Huawei Local Security Checks	2021/10/25	2023/11/28	high
155872	openSUSE 15 Security Update : ruby2.5 (openSUSE-SU-2021:1535-1)	Nessus	SuSE Local Security Checks	2021/12/7	2023/11/22	high
156519	EulerOS Virtualization 3.0.2.6 : ruby (EulerOS-SA-2021-2866)	Nessus	Huawei Local Security Checks	2022/1/6	2023/11/21	high
158000	EulerOS Virtualization 3.0.6.0 : ruby (EulerOS-SA-2022-1093)	Nessus	Huawei Local Security Checks	2022/2/13	2023/11/9	high
158117	CentOS 8 : ruby:2.6 (CESA-2022:0543)	Nessus	CentOS Local Security Checks	2022/2/16	2023/11/8	high
158120	RHEL 8 : ruby:2.6 (RHSA-2022:0544)	Nessus	Red Hat Local Security Checks	2022/2/16	2024/11/7	high
158467	Oracle Linux 8 : ruby:2.5 (ELSA-2022-0672)	Nessus	Oracle Linux Local Security Checks	2022/3/1	2024/11/1	high
181972	Amazon Linux 2 : ruby (ALASRUBY3.0-2023-005)	Nessus	Amazon Linux Local Security Checks	2023/9/27	2024/12/11	high
184609	Rocky Linux 8 : ruby:2.5 (RLSA-2022:0672)	Nessus	Rocky Linux Local Security Checks	2023/11/6	2023/11/6	high
236695	Alibaba Cloud Linux 3 : 0054: ruby:2.7 (ALINUX3-SA-2021:0054)	Nessus	Alibaba Cloud Linux Local Security Checks	2025/5/14	2025/5/14	high
239811	TencentOS Server 3: ruby (TSSA-2022:0176)	Nessus	Tencent Local Security Checks	2025/6/16	2025/12/5	critical

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