CVE-2016-2119

Name	CVE-2016-2119
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DSA-3740-1
NVD severity	medium (attack range: remote)
Debian Bugs	830195

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
samba (PTS)	jessie (security), jessie	2:4.2.14+dfsg-0+deb8u9	fixed
	stretch	2:4.5.12+dfsg-2+deb9u1	fixed
	stretch (security)	2:4.5.12+dfsg-2+deb9u2	fixed
	buster, sid	2:4.8.2+dfsg-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
samba	source	(unstable)	2:4.4.5+dfsg-1	medium		830195
samba	source	jessie	2:4.2.14+dfsg-0+deb8u2	medium	DSA-3740-1
samba	source	wheezy	(not affected)

[wheezy] - samba <not-affected> (Affects Samba 4.0.0 to 4.4.0)
https://www.samba.org/samba/security/CVE-2016-2119.html
Affects Samba 4.0.0 to 4.4.4