The version of ruby installed on the remote host is prior to 3.0.6-156. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2RUBY3.0-2023-001 advisory.

    A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1. (CVE-2023-28755)

    A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to Time objects. The fixed versions are 0.1.1 and 0.2.2. (CVE-2023-28756)

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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7025 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/cgi-gem: HTTP response splitting in CGI (CVE-2021-33621)

    * ruby: Buffer overrun in String-to-Float conversion (CVE-2022-28739)

    * ruby: ReDoS vulnerability in URI (CVE-2023-28755)

    * ruby: ReDoS vulnerability in Time (CVE-2023-28756)

    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 8.9 Release Notes     linked from 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 :

  - A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1. (CVE-2023-28755)

  - A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to Time objects. The fixed versions are 0.1.1 and 0.2.2. (CVE-2023-28756)

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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1576 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: ruby (3.1). (RHEL-29052)

    Security Fix(es):

    * ruby/cgi-gem: HTTP response splitting in CGI (CVE-2021-33621)

    * ruby: ReDoS vulnerability in URI (CVE-2023-28755)

    * ruby: ReDoS vulnerability - upstream's incomplete fix for CVE-2023-28755 (CVE-2023-36617)

    * ruby: ReDoS vulnerability in Time (CVE-2023-28756)

    Bug Fix(es):

    * ruby/rubygem-irb: IRB has hard dependency on rubygem-rdoc (RHEL-29048)

    * ruby: Ruby cannot read private key in FIPS mode on RHEL 9 (RHEL-12437)

    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 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-2024:0234 advisory.

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

    CVE-2021-33621:
    The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response     splitting. This is relevant to applications that use untrusted user input either to generate an HTTP     response or to create a CGI::Cookie object.

    CVE-2023-28755:
    A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1.

    CVE-2023-28756:
    A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.

    CVE-2024-27280:
    A buffer overread flaw was found in rubygem StringIO. The ungetbyte and ungetc methods on a StringIO     object can read past the end of a string, and a subsequent call to StringIO.gets may return the memory     value.

    CVE-2024-27281:
    A flaw was found in Rubygem RDoc. When parsing .rdoc_options used for configuration in RDoc as a YAML file     there are no restrictions on the classes that can be restored. This issue may lead to object injection,     resulting in remote code execution.

    CVE-2024-27282:
    A flaw was found in Ruby. If attacker-supplied data is provided to the Ruby regex compiler, it is possible     to extract arbitrary heap data relative to the start of the text, including pointers and sensitive     strings.

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.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:3500 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/cgi-gem: HTTP response splitting in CGI (CVE-2021-33621)

    * ruby: ReDoS vulnerability in URI (CVE-2023-28755)

    * ruby: ReDoS vulnerability in Time (CVE-2023-28756)

    * ruby: RCE vulnerability with .rdoc_options in RDoc (CVE-2024-27281)

    * ruby: Buffer overread vulnerability in StringIO (CVE-2024-27280)

    * ruby: Arbitrary memory address read vulnerability with Regex search (CVE-2024-27282)

    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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2024:3500 advisory.

    * ruby/cgi-gem: HTTP response splitting in CGI (CVE-2021-33621)
    * ruby: ReDoS vulnerability in URI (CVE-2023-28755)
    * ruby: ReDoS vulnerability in Time (CVE-2023-28756)
    * ruby: RCE vulnerability with .rdoc_options in RDoc (CVE-2024-27281)
    * ruby: Buffer overread vulnerability in StringIO (CVE-2024-27280)
    * ruby: Arbitrary memory address read vulnerability with Regex search (CVE-2024-27282)

Tenable has extracted the preceding description block directly from the AlmaLinux 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-2024:0106 advisory.

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

    CVE-2021-33621:
    The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response     splitting. This is relevant to applications that use untrusted user input either to generate an HTTP     response or to create a CGI::Cookie object.

    CVE-2023-28755:
    A ReDoS issue was discovered in the URI component through 0.12.0 in Ruby through 3.2.1. The URI parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to URI objects. The fixed versions are 0.12.1, 0.11.1, 0.10.2 and 0.10.0.1.

    CVE-2023-28756:
    A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser     mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing     strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.

    CVE-2023-36617:
    A ReDoS issue was discovered in the URI component before 0.12.2 for Ruby. The URI parser mishandles     invalid URLs that have specific characters. There is an increase in execution time for parsing strings to     URI objects with rfc2396_parser.rb and rfc3986_parser.rb. NOTE: this issue exists becuse of an incomplete     fix for CVE-2023-28755. Version 0.10.3 is also a fixed version.

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	Name	Product	Family	Published	Updated	Severity
181969	Amazon Linux 2 : ruby (ALASRUBY3.0-2023-001)	Nessus	Amazon Linux Local Security Checks	9/27/2023	12/11/2024	medium
185667	RHEL 8 : ruby:2.5 (RHSA-2023:7025)	Nessus	Red Hat Local Security Checks	11/14/2023	11/7/2024	high
188796	EulerOS 2.0 SP11 : ruby (EulerOS-SA-2023-2708)	Nessus	Huawei Local Security Checks	1/16/2024	1/16/2024	medium
192733	RHEL 9 : ruby:3.1 (RHSA-2024:1576)	Nessus	Red Hat Local Security Checks	4/1/2024	4/29/2025	high
239106	TencentOS Server 3: ruby:3.0 (TSSA-2024:0234)	Nessus	Tencent Local Security Checks	6/16/2025	11/20/2025	critical
198157	RHEL 8 : ruby:3.0 (RHSA-2024:3500)	Nessus	Red Hat Local Security Checks	5/30/2024	4/29/2025	critical
198232	AlmaLinux 8 : ruby:3.0 (ALSA-2024:3500)	Nessus	Alma Linux Local Security Checks	5/31/2024	1/13/2025	high
276361	TencentOS Server 3: ruby:3.1 (TSSA-2024:0106)	Nessus	Tencent Local Security Checks	11/20/2025	11/20/2025	high

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