Vulnerability Details : CVE-2016-0739
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."
Vulnerability category: Information leak
Products affected by CVE-2016-0739
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
- cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*
Threat overview for CVE-2016-0739
Top countries where our scanners detected CVE-2016-0739
Top open port discovered on systems with this issue
53
IPs affected by CVE-2016-0739 115,645
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2016-0739!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
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Exploit prediction scoring system (EPSS) score for CVE-2016-0739
0.39%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-0739
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2016-0739
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-0739
-
http://www.ubuntu.com/usn/USN-2912-1
USN-2912-1: libssh vulnerabilities | Ubuntu security notices
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https://puppet.com/security/cve/CVE-2016-0739
CVE-2016-0739 - libssh Vulnerability | Puppet
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http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html
[SECURITY] Fedora 22 Update: libssh-0.7.3-1.fc22
-
http://www.debian.org/security/2016/dsa-3488
Debian -- Security Information -- DSA-3488-1 libssh
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https://security.gentoo.org/glsa/201606-12
libssh and libssh2: Multiple vulnerabilities (GLSA 201606-12) — Gentoo securityThird Party Advisory
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http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html
[SECURITY] Fedora 23 Update: libssh-0.7.3-1.fc23
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http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html
openSUSE-SU-2016:0880-1: moderate: Security update for libssh
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http://rhn.redhat.com/errata/RHSA-2016-0566.html
RHSA-2016:0566 - Security Advisory - Red Hat Customer Portal
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https://www.libssh.org/security/advisories/CVE-2016-0739.txt
Vendor Advisory
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https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
libssh 0.7.3 (security and bugfix release) – libsshVendor Advisory
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