The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting length of the name. This resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11546:01 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)
      * rexml: REXML denial of service (CVE-2025-58767)
      *  When using the + operator to combine URIs, sensitive information like passwords from the original URI     can be leaked,           violating RFC3986 and making applications vulnerable to credential exposure. (CVE-2025-61594)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11557:01 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)
      * rexml: REXML denial of service (CVE-2025-58767)
      * When using the + operator to combine URIs, sensitive information like passwords from the original URI     can be leaked,          violating RFC3986 and making applications vulnerable to credential exposure. (CVE-2025-61594)

Tenable has extracted the preceding description block directly from the MiracleLinux 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-2025:23062 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)
      * rexml: REXML denial of service (CVE-2025-58767)

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 AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:23063 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)
      * rexml: REXML denial of service (CVE-2025-58767)

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 AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:23141 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)
      * rexml: REXML denial of service (CVE-2025-58767)

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 RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:23141 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)

    * rexml: REXML denial of service (CVE-2025-58767)

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 RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:23062 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)

    * rexml: REXML denial of service (CVE-2025-58767)

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 RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:23063 advisory.

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)

    * rexml: REXML denial of service (CVE-2025-58767)

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 Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:23927 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):

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)

    * rexml: REXML denial of service (CVE-2025-58767)

    * git-lfs: Git LFS may write to arbitrary files via crafted symlinks (CVE-2025-26625)

    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-2025:23648 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):

    * resolv: Denial of Service in resolv gem (CVE-2025-24294)

    * rexml: REXML denial of service (CVE-2025-58767)

    * git-lfs: Git LFS may write to arbitrary files via crafted symlinks (CVE-2025-26625)

    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-2025-23063 advisory.

    - Fix possible denial of service in resolv gem (CVE-2025-24294)
    - Fix URI Credential Leakage Bypass previous fixes. (CVE-2025-61594)

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 Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-23141 advisory.

    - Fix possible denial of service in resolv gem (CVE-2025-24294)
    - Fix URI Credential Leakage Bypass previous fixes. (CVE-2025-61594)

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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-23062 advisory.

    - Fix possible denial of service in resolv gem (CVE-2025-24294)
    - Fix URI Credential Leakage Bypass previous fixes. (CVE-2025-61594)

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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:4264-1 advisory.

    - CVE-2024-35221: Fixed remote DoS via YAML manifest (bsc#1225905)
    - CVE-2024-47220: Fixed HTTP request smuggling in WEBrick (bsc#1230930)
    - CVE-2024-49761: Fixed ReDOS vulnerability by updating REXML to 3.3.9 (bsc#1232440)
    - CVE-2025-24294: Fixed denial of service (DoS) caused by an insufficient check on the length       of a decompressed domain name within a DNS packet in resolv gem (bsc#1246430)
    - CVE-2025-27219: Fixed denial of service in CGI::Cookie.parse (bsc#1237804)
    - CVE-2025-27220: Fixed ReDoS in CGI::Util#escapeElement (bsc#1237806)
    - CVE-2025-27221: Fixed userinfo leakage in URI#join, URI#merge and URI#+ (bsc#1237805)
    - CVE-2025-6442: Fixed ruby WEBrick read_header HTTP request smuggling vulnerability (bsc#1245254)

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.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2025:3776-1 advisory.

    - CVE-2025-24294: resolv: insufficient checks on the length of a decompressed domain name when processing     a DNS packet       can lead to a denial of service due to excessive resource consumption (bsc#1246430).

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

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

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7734-1 advisory.

    It was discovered that Ruby incorrectly handled certain IO stream methods. A remote attacker could use     this issue to cause Ruby to crash, resulting in a denial of service, or possibly obtain sensitive     information. This issue only affected Ubuntu 18.04 LTS. (CVE-2024-27280)

    It was discovered that the Ruby regex compiler incorrectly handled certain memory operations. A remote     attacker could possibly use this issue to obtain sensitive memory contents. This issue only affected     Ubuntu 18.04 LTS. (CVE-2024-27282)

    It was discovered that Ruby incorrectly handled parsing of certain XML characters through the REXML gem.
    An attacker could use this issue to cause Ruby to crash, resulting in a denial of service. This issue only     affected Ubuntu 18.04 LTS. (CVE-2024-35176)

    It was discovered that Ruby incorrectly handled decompressed domain names within a DNS packet. An attacker     could use this issue to cause Ruby to crash, resulting in a denial of service. (CVE-2025-24294)

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 Ubuntu 22.04 LTS / 25.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7735-1 advisory.

    It was discovered that RubyGems incorrectly handled certain regular expressions. An attacker could use     this issue to cause RubyGems to crash, resulting in a denial of service. This issue only affected Ubuntu     22.04 LTS. (CVE-2023-28755)

    It was discovered that RubyGems incorrectly handled decompressed domain names within a DNS packet. An     attacker could use this issue to cause RubyGems to crash, resulting in a denial of service. This issue     only affected Ubuntu 25.04. (CVE-2025-24294)

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

  - The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient     check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious     DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the     name decompression process consumes a large amount of CPU resources, as the library does not limit the     resulting length of the name. This resource consumption can cause the application thread to become     unresponsive, resulting in a Denial of Service condition. (CVE-2025-24294)

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1131 advisory.

    The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient     check on the length of a decompressed domain name within a DNS packet.An attacker can craft a malicious     DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the     name decompression process consumes a large amount of CPU resources, as the library does not limit the     resulting length of the name.This resource consumption can cause the application thread to become     unresponsive, resulting in a Denial of Service condition. (CVE-2025-24294)

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

Note that Nessus has not tested for this issue 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 2.0.0.648-36. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-2957 advisory.

    The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient     check on the length of a decompressed domain name within a DNS packet.An attacker can craft a malicious     DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the     name decompression process consumes a large amount of CPU resources, as the library does not limit the     resulting length of the name.This resource consumption can cause the application thread to become     unresponsive, resulting in a Denial of Service condition. (CVE-2025-24294)

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

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

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the eed1a411-699b-11f0-91fe-000c295725e4 advisory.

    Manu reports:

                The vulnerability is caused by an insufficient check on                 the length of a decompressed domain name within a DNS                 packet.


                An attacker can craft a malicious DNS packet containing a                 highly compressed domain name. When the resolv library                 parses such a packet, the name decompression process                 consumes a large amount of CPU resources, as the library                 does not limit the resulting length of the name.


                This resource consumption can cause the application thread                 to become unresponsive, resulting in a Denial of Service                 condition.


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

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

ID	Name	Product	Family	Severity
283025	MiracleLinux 8 : ruby:3.3 security update (AXSA:2025-11546:01)	Nessus	Miracle Linux Local Security Checks	medium
282681	MiracleLinux 9 : ruby:3.3 security update (AXSA:2025-11557:01)	Nessus	Miracle Linux Local Security Checks	medium
282339	AlmaLinux 8 : ruby:3.3 (ALSA-2025:23062)	Nessus	Alma Linux Local Security Checks	medium
282338	AlmaLinux 9 : ruby:3.3 (ALSA-2025:23063)	Nessus	Alma Linux Local Security Checks	medium
281887	AlmaLinux 10 : ruby (ALSA-2025:23141)	Nessus	Alma Linux Local Security Checks	medium
281624	RockyLinux 10 : ruby (RLSA-2025:23141)	Nessus	Rocky Linux Local Security Checks	medium
281623	RockyLinux 8 : ruby:3.3 (RLSA-2025:23062)	Nessus	Rocky Linux Local Security Checks	medium
281622	RockyLinux 9 : ruby:3.3 (RLSA-2025:23063)	Nessus	Rocky Linux Local Security Checks	medium
279550	RHEL 10 : ruby (RHSA-2025:23927)	Nessus	Red Hat Local Security Checks	high
279117	RHEL 9 : ruby:3.3 (RHSA-2025:23648)	Nessus	Red Hat Local Security Checks	high
278561	Oracle Linux 9 : ruby:3.3 (ELSA-2025-23063)	Nessus	Oracle Linux Local Security Checks	medium
278499	Oracle Linux 10 : ruby (ELSA-2025-23141)	Nessus	Oracle Linux Local Security Checks	medium
278394	Oracle Linux 8 : ruby:3.3 (ELSA-2025-23062)	Nessus	Oracle Linux Local Security Checks	medium
277246	SUSE SLED15 / SLES15 Security Update : ruby2.5 (SUSE-SU-2025:4264-1)	Nessus	SuSE Local Security Checks	high
271425	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : ruby2.5 (SUSE-SU-2025:3776-1)	Nessus	SuSE Local Security Checks	high
261428	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 : Ruby vulnerabilities (USN-7734-1)	Nessus	Ubuntu Local Security Checks	critical
261426	Ubuntu 22.04 LTS / 25.04 : RubyGems vulnerabilities (USN-7735-1)	Nessus	Ubuntu Local Security Checks	high
246456	Linux Distros Unpatched Vulnerability : CVE-2025-24294	Nessus	Misc.	high
243497	Amazon Linux 2023 : ruby3.2, ruby3.2-bundled-gems, ruby3.2-default-gems (ALAS2023-2025-1131)	Nessus	Amazon Linux Local Security Checks	high
243435	Amazon Linux 2 : ruby (ALAS-2025-2957)	Nessus	Amazon Linux Local Security Checks	high
242862	FreeBSD : rubygem-resolv -- Possible denial of service (eed1a411-699b-11f0-91fe-000c295725e4)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2025-24294

high

Tenable Plugins

medium

medium

medium

medium

medium

medium

medium

medium

high

high

medium

medium

medium

high

high

critical

high

high

high

high

high