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."
Exploit prediction scoring system (EPSS) score
EPSS Score 0.021
EPSS Ranking 83.3%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html
- http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html
- http://rhn.redhat.com/errata/RHSA-2016-0566.html
- http://www.debian.org/security/2016/dsa-3488
- http://www.ubuntu.com/usn/USN-2912-1
- https://puppet.com/security/cve/CVE-2016-0739
- https://security.gentoo.org/glsa/201606-12
- https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
- https://www.libssh.org/security/advisories/CVE-2016-0739.txt
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html
- http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html
- http://rhn.redhat.com/errata/RHSA-2016-0566.html
- http://www.debian.org/security/2016/dsa-3488
- http://www.ubuntu.com/usn/USN-2912-1
- https://puppet.com/security/cve/CVE-2016-0739
- https://security.gentoo.org/glsa/201606-12
- https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
- https://www.libssh.org/security/advisories/CVE-2016-0739.txt
Products affected by CVE-2016-0739
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cpe:2.3:a:libssh:libssh:-
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cpe:2.3:a:libssh:libssh:0.4.7
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cpe:2.3:a:libssh:libssh:0.4.8
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cpe:2.3:a:libssh:libssh:0.5.0
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cpe:2.3:a:libssh:libssh:0.5.1
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cpe:2.3:a:libssh:libssh:0.5.2
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cpe:2.3:a:libssh:libssh:0.5.3
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cpe:2.3:a:libssh:libssh:0.5.4
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cpe:2.3:a:libssh:libssh:0.5.5
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cpe:2.3:a:libssh:libssh:0.6.0
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cpe:2.3:a:libssh:libssh:0.6.1
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cpe:2.3:a:libssh:libssh:0.6.2
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cpe:2.3:a:libssh:libssh:0.6.3
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cpe:2.3:a:libssh:libssh:0.6.4
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cpe:2.3:a:libssh:libssh:0.6.5
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cpe:2.3:a:libssh:libssh:0.7.0
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cpe:2.3:a:libssh:libssh:0.7.1
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cpe:2.3:a:libssh:libssh:0.7.2
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cpe:2.3:o:canonical:ubuntu_linux:12.04
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cpe:2.3:o:canonical:ubuntu_linux:14.04
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cpe:2.3:o:canonical:ubuntu_linux:15.10
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cpe:2.3:o:debian:debian_linux:7.0
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:fedoraproject:fedora:22
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cpe:2.3:o:fedoraproject:fedora:23
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cpe:2.3:o:redhat:enterprise_linux:7.0