CVE-2016-0739
Libssh SSH Bits/Bytes Confusion Vulnerability
Description
libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 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."
INFO
Published Date :
April 13, 2016, 5:59 p.m.
Last Modified :
Dec. 9, 2017, 2:29 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
Affected Products
The following products are affected by CVE-2016-0739
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-0739.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-0739 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-0739 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Dec. 09, 2017
Action Type Old Value New Value Added Reference https://puppet.com/security/cve/CVE-2016-0739 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 03, 2016
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html [No Types Assigned] -
Modified Analysis by [email protected]
Jul. 29, 2016
Action Type Old Value New Value Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:libssh:libssh:0.7.2:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Configuration 4 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Configuration 5 OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:a:libssh:libssh:0.7.2:*:*:*:*:*:*:* (and previous) Configuration 4 OR *cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Configuration 5 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Changed Reference Type https://security.gentoo.org/glsa/201606-12 No Types Assigned https://security.gentoo.org/glsa/201606-12 Third Party Advisory -
CVE Modified by [email protected]
Jul. 27, 2016
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201606-12 -
Modified Analysis by [email protected]
Apr. 18, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:a:libssh:libssh:0.7.2:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Configuration 3 OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Configuration 4 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Configuration 5 OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/ No Types Assigned https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/ Advisory Changed Reference Type https://www.libssh.org/security/advisories/CVE-2016-0739.txt No Types Assigned https://www.libssh.org/security/advisories/CVE-2016-0739.txt Advisory Added CWE CWE-200 -
Initial Analysis by [email protected]
Apr. 18, 2016
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-0739 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-0739
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.39 }} 0.12%
score
0.69456
percentile