CVE-2016-2112

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 9.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-04-25 · updated 2026-06-17
Weakness: CWE-254

Description

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: 14.04, 15.10, 16.04
Samba: 3.0.0, 3.0.1, 3.0.2, 3.0.2-a, 3.0.2a, 3.0.3 (+242)

References

http://badlock.org/
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html

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