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.

vendor_unpatched cve-2025-24294: Unpatched CVEs for Debian Linux, Ubuntu Linux (cve-2025-24294)

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
243497	Amazon Linux 2023 : ruby3.2, ruby3.2-bundled-gems, ruby3.2-default-gems (ALAS2023-2025-1131)	Nessus	Amazon Linux Local Security Checks	medium
243435	Amazon Linux 2 : ruby (ALAS-2025-2957)	Nessus	Amazon Linux Local Security Checks	medium
242862	FreeBSD : rubygem-resolv -- Possible denial of service (eed1a411-699b-11f0-91fe-000c295725e4)	Nessus	FreeBSD Local Security Checks	high

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