This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page.
View CVE-2025-49506 →
UBUNTU-CVE-2025-49506
APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to hashes or passwords comparisons, potentia...
Original description
The description as published by the source.
APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to hashes or passwords comparisons, potentially leaking their content via a side channel timing attack particularly on platforms without crypt() such as Windows, BeOS, NetWare, or Android. Users are recommended to upgrade to version 1.6.4, which fixes this issue.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Ubuntu:Pro:14.04:LTS
apr-util
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.3-1ubuntu0.1~esm3"}]}]
Ubuntu:Pro:18.04:LTS
apr-util
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-2ubuntu0.1+esm1"}]}]
Ubuntu:Pro:20.04:LTS
apr-util
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-4ubuntu2.2+esm1"}]}]
Ubuntu:22.04:LTS
apr-util
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-5ubuntu4.22.04.3"}]}]
Ubuntu:24.04:LTS
apr-util
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.3-1.1ubuntu7.1"}]}]
Ubuntu:26.04:LTS
apr-util
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.3-3ubuntu3.1"}]}]
References
- advisory ubuntu.com
- report ubuntu.com
- report cve.org
- report lists.apache.org
- report openwall.com