CVE-2025-24294 Affecting ruby2.7 package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.02% (4th percentile)

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  • Snyk IDSNYK-DEBIAN11-RUBY27-10753051
  • published16 Jul 2025
  • disclosed12 Jul 2025

Introduced: 12 Jul 2025

NewCVE-2025-24294  (opens in a new tab)

How to fix?

There is no fixed version for Debian:11 ruby2.7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.7 package and not the ruby2.7 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1