Vulnerability CVE-2016-0787
Published: 2016-04-13

Description:
The diffie_hellman_sha256 function in kex.c in libssh2 before 1.7.0 improperly truncates secrets to 128 or 256 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."

Type:

CWE-200

 (Information Exposure)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Opensuse -> Opensuse 
Novell -> Opensuse 
Libssh2 -> Libssh2 
Fedoraproject -> Fedora 
Debian -> Debian linux 

 References:
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177980.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178573.html
http://lists.opensuse.org/opensuse-updates/2016-03/msg00008.html
http://www.debian.org/security/2016/dsa-3487
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.securityfocus.com/bid/82514
https://bto.bluecoat.com/security-advisory/sa120
https://kc.mcafee.com/corporate/index?page=content&id=SB10156
https://puppet.com/security/cve/CVE-2016-0787
https://security.gentoo.org/glsa/201606-12
https://www.libssh2.org/adv_20160223.html
https://www.libssh2.org/CVE-2016-0787.patch
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