libssh before 0.7.3 improperly truncates ephemeral secrets generated for the...
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."
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html
- http://www.ubuntu.com/usn/USN-2912-1
- https://www.libssh.org/security/advisories/CVE-2016-0739.txt
- https://puppet.com/security/cve/CVE-2016-0739
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html
- https://security.gentoo.org/glsa/201606-12
- http://www.debian.org/security/2016/dsa-3488
- http://rhn.redhat.com/errata/RHSA-2016-0566.html
- https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
- http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html
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CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.