The version of ruby installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-27221 advisory.

  - 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)

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

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

  - 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)

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

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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:4488 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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-4488 advisory.

    ruby     [3.1.7-146]
    - Upgrade to Ruby 3.1.7.
      Resolves: RHEL-55410
    - Fix DoS vulnerability in REXML. (CVE-2024-39908)       Resolves: RHEL-86077

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 RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:4488 advisory.

    * 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)

Tenable has extracted the preceding description block directly from the RockyLinux 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 SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02739-1 advisory.

    - CVE-2025-6442: Fixed read_header HTTP Request Smuggling Vulnerability in WEBrick (bsc#1245254)
    - CVE-2025-27221: Fixed userinfo leakage in URI#join, URI#merge and URI#+ (bsc#1237805)

Tenable has extracted the preceding description block directly from the SUSE 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	名前	製品	ファミリー	公開日	更新日	深刻度
234642	Azure Linux 3.0 Security Update: ruby (CVE-2025-27221)	Nessus	Azure Linux Local Security Checks	2025/4/20	2025/9/15	low
232079	Linux Distros Unpatched Vulnerability : CVE-2025-27221	Nessus	Misc.	2025/3/6	2025/10/14	medium
233968	Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : Ruby vulnerabilities (USN-7418-1)	Nessus	Ubuntu Local Security Checks	2025/4/7	2025/9/3	high
235165	RHEL 9 : ruby:3.1 (RHSA-2025:4488)	Nessus	Red Hat Local Security Checks	2025/5/6	2025/6/5	high
235375	Oracle Linux 9 : ruby:3.1 (ELSA-2025-4488)	Nessus	Oracle Linux Local Security Checks	2025/5/6	2025/9/11	high
243116	RockyLinux 9 : ruby:3.1 (RLSA-2025:4488)	Nessus	Rocky Linux Local Security Checks	2025/7/30	2025/7/30	high
246926	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : ruby2.5 (SUSE-SU-2025:02739-1)	Nessus	SuSE Local Security Checks	2025/8/9	2025/8/9	low

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