CVE-2016-2112: Canonical Ubuntu Linux

Medium severity, CVSS 5.9. EPSS: 9.4% chance of exploitation in the next 30 days.

The bundled LDAP client library in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not recognize the "client ldap sasl wrapping" setting, which allows man-in-the-middle attackers to perform LDAP protocol-downgrade attacks by modifying the client-server data stream.

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 15.10 only; version 16.04 only
• Samba Samba: version 3.0.0 only; version 3.0.1 only; version 3.0.2 only; version 3.0.2a only; version 3.0.3 only; version 3.0.4 only; …

Published 2016-04-25. Last modified 2026-06-17.