CVE-2016-2119

libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5 allows man-in-the-middle attackers to bypass a client-signing protection mechanism, and consequently spoof SMB2 and SMB3 servers, via the (1) SMB2_SESSION_FLAG_IS_GUEST or (2) SMB2_SESSION_FLAG_IS_NULL flag.

• CWE-94

• http://lists.opensuse.org/opensuse-updates/2016-07/msg00060.htmlMailing List, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2016-1486.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2016-1487.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2016-1494.htmlThird Party Advisory
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
• http://www.securityfocus.com/bid/91700Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1036244Third Party Advisory, VDB Entry
• https://security.gentoo.org/glsa/201805-07Third Party Advisory
• https://www.samba.org/samba/security/CVE-2016-2119.htmlVendor Advisory
• http://lists.opensuse.org/opensuse-updates/2016-07/msg00060.htmlMailing List, Third Party Advisory
• http://rhn.redhat.com/errata/RHSA-2016-1486.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2016-1487.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2016-1494.htmlThird Party Advisory
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
• http://www.securityfocus.com/bid/91700Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1036244Third Party Advisory, VDB Entry
• https://security.gentoo.org/glsa/201805-07Third Party Advisory
• https://www.samba.org/samba/security/CVE-2016-2119.htmlVendor Advisory

Published

Jul 7, 2016

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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