CVE-2013-4496: Canonical Ubuntu Linux

Medium severity, CVSS 5.0. EPSS: 9.8% chance of exploitation in the next 30 days.

Samba 3.x before 3.6.23, 4.0.x before 4.0.16, and 4.1.x before 4.1.6 does not enforce the password-guessing protection mechanism for all interfaces, which makes it easier for remote attackers to obtain access via brute-force ChangePasswordUser2 (1) SAMR or (2) RAP attempts.

Affected products

• Canonical Ubuntu Linux: version 10.04 only; version 12.04 only; version 12.10 only; version 13.10 only
• Samba Samba: from 3.4.0, before 3.6.23 (fixed in 3.6.23); from 4.0.0, before 4.0.16 (fixed in 4.0.16); from 4.1.0, before 4.1.6 (fixed in 4.1.6)

Published 2014-03-14. Last modified 2026-06-16.