CVE-2025-3576

Publication date 15 April 2025

Last updated 30 May 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.9 · Medium

Score breakdown

A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.

Read the notes from the security team

Status

Package Ubuntu Release Status
krb5 25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Fixed 1.20.1-6ubuntu2.6
22.04 LTS jammy
Fixed 1.19.2-2ubuntu0.7
20.04 LTS focal
Fixed 1.17-6ubuntu4.11
18.04 LTS bionic
16.04 LTS xenial
14.04 LTS trusty

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Notes

hlibk

Vulnerability is present in the implementation of RC4. Using stronger encryption types is preferred.

Severity score breakdown

Parameter Value
Base score 5.9 · Medium
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N