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Vulnerability record · CVE-2016-2112 · published 25 April 2016

CVE-2016-2112: Samba vulnerability

Samba · Samba

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.

5.9 CVSS 3.0 Medium EPSS 9.4% · top 4.7% CWE-254 · CWE-254
5.9CVSS 3.0 base score, v2 4.3
9.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
74References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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
http://rhn.redhat.com/errata/RHSA-2016-0611.html
http://rhn.redhat.com/errata/RHSA-2016-0612.html
http://rhn.redhat.com/errata/RHSA-2016-0613.html
http://rhn.redhat.com/errata/RHSA-2016-0614.html
http://rhn.redhat.com/errata/RHSA-2016-0618.html
http://rhn.redhat.com/errata/RHSA-2016-0619.html
http://rhn.redhat.com/errata/RHSA-2016-0620.html
http://rhn.redhat.com/errata/RHSA-2016-0624.html
http://www.debian.org/security/2016/dsa-3548
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.securitytracker.com/id/1035533
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012
http://www.ubuntu.com/usn/USN-2950-1
http://www.ubuntu.com/usn/USN-2950-2
http://www.ubuntu.com/usn/USN-2950-3
http://www.ubuntu.com/usn/USN-2950-4
http://www.ubuntu.com/usn/USN-2950-5
https://bto.bluecoat.com/security-advisory/sa122
https://h20566.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c05087821
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05082964
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05162399
https://security.gentoo.org/glsa/201612-47
https://www.samba.org/samba/history/samba-4.2.10.html
https://www.samba.org/samba/latest_news.html#4.4.2
https://www.samba.org/samba/security/CVE-2016-2112.html PatchVendor Advisory
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

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Source: NIST National Vulnerability Database (record CVE-2016-2112), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.