CVE-2015-3146

Name	CVE-2015-3146
Description	The (1) SSH_MSG_NEWKEYS and (2) SSH_MSG_KEXDH_REPLY packet handlers in package_cb.c in libssh before 0.6.5 do not properly validate state, which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted SSH packet.
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)
NVD severity	medium (attack range: remote)
Debian Bugs	784404

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libssh (PTS)	jessie (security), jessie	0.6.3-4+deb8u2	fixed
	stretch	0.7.3-2	fixed
	buster	0.8.0~20170825.94fa1e38-1	fixed
	sid	0.8.0~20170825.94fa1e38-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Debian Bugs
libssh	source	(unstable)	0.6.3-4.2	medium	784404
libssh	source	jessie	0.6.3-4+deb8u1	medium
libssh	source	squeeze	(not affected)
libssh	source	wheezy	0.5.4-1+deb7u3	medium

Notes

[squeeze] - libssh <not-affected> (Issue only present in versions > 0.5.1, squeeze has 0.4.5)
https://www.libssh.org/2015/04/30/libssh-0-6-5-security-and-bugfix-release/