The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7418-1 advisory.

    It was discovered that Ruby incorrectly handled parsing of an XML document that has specific XML     characters in an attribute value using REXML gem. An attacker could use this issue to cause Ruby to crash,     resulting in a denial of service. This issue only affected in Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and     Ubuntu 24.10. (CVE-2024-35176, CVE-2024-39908, CVE-2024-41123, CVE-2024-43398)

    It was discovered that Ruby incorrectly handled expanding ranges in the net-imap response parser. If a     user or automated system were tricked into connecting to a malicious IMAP server, a remote attacker could     possibly use this issue to consume memory, leading to a denial of service. This issue only affected Ubuntu     24.04 LTS, and Ubuntu 24.10. (CVE-2025-25186)

    It was discovered that the Ruby CGI gem incorrectly handled parsing certain cookies. A remote attacker     could possibly use this issue to consume resources, leading to a denial of service. (CVE-2025-27219)

    It was discovered that the Ruby CGI gem incorrectly handled parsing certain regular expressions. A remote     attacker could possibly use this issue to consume resources, leading to a denial of service.
    (CVE-2025-27220)

    It was discovered that the Ruby URI gem incorrectly handled certain URI handling methods. A remote     attacker could possibly use this issue to leak authentication credentials. (CVE-2025-27221)

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 Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-9bef972bb9 advisory.

    Upgrade to Ruby 3.3.8.

    * CVE-2025-25186: Fix Net::IMAP vulnerable to possible DoS by memory exhaustion<br>       Resolves: rhbz#2345556<br>
    * CVE-2025-27219: Denial of Service in CGI::Cookie.parse<br>       Resolves: rhbz#2357516<br>
    * CVE-2025-27221: userinfo leakage in URI#join, URI#merge and URI#+



Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-929 advisory.

    Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Starting in     version 0.3.2 and prior to versions 0.3.8, 0.4.19, and 0.5.6, there is a possibility for denial of service     by memory exhaustion in `net-imap`'s response parser.  At any time while the client is connected, a     malicious server can send  can send highly compressed `uid-set` data which is automatically read by the     client's receiver thread. The response parser uses `Range#to_a` to convert the `uid-set` data into arrays     of integers, with no limitation on the expanded size of the ranges. Versions 0.3.8, 0.4.19, 0.5.6, and     higher fix this issue. Additional details for proper configuration of fixed versions and backward     compatibility are available in the GitHub Security Advisory. (CVE-2025-25186)

    In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential     Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw     cookie value it processes. This oversight can lead to excessive resource consumption when parsing     extremely large cookies. (CVE-2025-27219)

    In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists     in the Util#escapeElement method. (CVE-2025-27220)

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-2025:4063 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):

    * rexml: DoS vulnerability in REXML (CVE-2024-39908)

    * rexml: rubygem-rexml: DoS when parsing an XML having many specific characters such as whitespace     character, >] and ]> (CVE-2024-41123)

    * rexml: DoS vulnerability in REXML (CVE-2024-41946)

    * rexml: DoS vulnerability in REXML (CVE-2024-43398)

    * CGI: ReDoS in CGI::Util#escapeElement (CVE-2025-27220)

    * CGI: Denial of Service in CGI::Cookie.parse (CVE-2025-27219)

    * uri: userinfo leakage in URI#join, URI#merge and URI#+ (CVE-2025-27221)

    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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:4493 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):

    * net-imap: Net::IMAP vulnerable to possible DoS by memory exhaustion (CVE-2025-25186)

    * CGI: Denial of Service in CGI::Cookie.parse (CVE-2025-27219)

    * uri: userinfo leakage in URI#join, URI#merge and URI#+ (CVE-2025-27221)

    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 :

    In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an     inadvertent leakage of authentication credentials because userinfo is retained even after changing the     host.(CVE-2025-27221)

    In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential     Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw     cookie value it processes. This oversight can lead to excessive resource consumption when parsing     extremely large cookies.(CVE-2025-27219)

    In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists     in the Util#escapeElement method.(CVE-2025-27220)

Tenable has extracted the preceding description block directly from the EulerOS ruby 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 :

    In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists     in the Util#escapeElement method.(CVE-2025-27220)

    In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an     inadvertent leakage of authentication credentials because userinfo is retained even after changing the     host.(CVE-2025-27221)

    In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential     Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw     cookie value it processes. This oversight can lead to excessive resource consumption when parsing     extremely large cookies.(CVE-2025-27219)

Tenable has extracted the preceding description block directly from the EulerOS ruby 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-2025:10217 advisory.

    * net-imap: Net::IMAP vulnerable to possible DoS by memory exhaustion (CVE-2025-25186)
      * CGI: Denial of Service in CGI::Cookie.parse (CVE-2025-27219)
      * uri: userinfo leakage in URI#join, URI#merge and URI#+ (CVE-2025-27221)

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 remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4082 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4082-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                   Bastien Roucaris     March 10, 2025                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : ruby2.7     Version        : 2.7.4-1+deb11u5     CVE ID         : CVE-2025-27219 CVE-2025-27220 CVE-2025-27221

    Ruby a popular language was affected by multiple vulnerabilities

    CVE-2025-27219

        In the CGI gem, the CGI::Cookie.parse method in the CGI library         contains a potential Denial of Service (DoS) vulnerability.
        The method does not impose any limit on the length of the raw cookie         value it processes. This oversight can lead to excessive         resource consumption when parsing extremely large cookies

    CVE-2025-27220

        In the CGI gem, a Regular Expression Denial of Service (ReDoS)         vulnerability exists in the Util#escapeElement method.

    CVE-2025-27221

        In the URI gem, the URI handling methods         (URI.join, URI#merge, URI#+) have an inadvertent leakage of         authentication credentials because userinfo is retained         even after changing the host.

    For Debian 11 bullseye, these problems have been fixed in version     2.7.4-1+deb11u5.

    We recommend that you upgrade your ruby2.7 packages.

    For the detailed security status of ruby2.7 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/ruby2.7

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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
233968	Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : Ruby vulnerabilities (USN-7418-1)	Nessus	Ubuntu Local Security Checks	4/7/2025	9/3/2025	high
234750	Fedora 40 : ruby (2025-9bef972bb9)	Nessus	Fedora Local Security Checks	4/23/2025	4/23/2025	medium
234332	Amazon Linux 2023 : ruby3.2, ruby3.2-bundled-gems, ruby3.2-default-gems (ALAS2023-2025-929)	Nessus	Amazon Linux Local Security Checks	4/14/2025	4/14/2025	medium
234769	RHEL 8 : ruby:3.1 (RHSA-2025:4063)	Nessus	Red Hat Local Security Checks	4/23/2025	6/5/2025	high
235172	RHEL 9 : ruby:3.3 (RHSA-2025:4493)	Nessus	Red Hat Local Security Checks	5/6/2025	6/5/2025	medium
238223	EulerOS 2.0 SP13 : ruby (EulerOS-SA-2025-1625)	Nessus	Huawei Local Security Checks	6/11/2025	6/11/2025	medium
238397	EulerOS 2.0 SP11 : ruby (EulerOS-SA-2025-1678)	Nessus	Huawei Local Security Checks	6/12/2025	6/12/2025	medium
241317	AlmaLinux 8 : ruby:3.3 (ALSA-2025:10217)	Nessus	Alma Linux Local Security Checks	7/3/2025	7/3/2025	medium
232556	Debian dla-4082 : libruby2.7 - security update	Nessus	Debian Local Security Checks	3/10/2025	3/10/2025	medium

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