CVEvulnerability
CVE-2016-0739
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2016-04-13
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-200
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."
Affected configurations
• redhat enterprise linux 7.0
• canonical ubuntu linux 12.04
• canonical ubuntu linux 14.04
• canonical ubuntu linux 15.10
• libssh libssh (<= 0.7.2)
• fedoraproject fedora 22
• fedoraproject fedora 23
• debian debian linux 7.0
• debian debian linux 8.0
Related
Weakness · CWE (1)
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html lists.fedoraproject.org
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html lists.fedoraproject.org
- http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html lists.opensuse.org
- http://rhn.redhat.com/errata/RHSA-2016-0566.html rhn.redhat.com
- http://www.debian.org/security/2016/dsa-3488 www.debian.org
- http://www.ubuntu.com/usn/USN-2912-1 www.ubuntu.com
- https://puppet.com/security/cve/CVE-2016-0739 puppet.com
- https://security.gentoo.org/glsa/201606-12 Third Party Advisory
- https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/ Vendor Advisory
- https://www.libssh.org/security/advisories/CVE-2016-0739.txt Vendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html lists.fedoraproject.org
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html lists.fedoraproject.org
- http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html lists.opensuse.org
- http://rhn.redhat.com/errata/RHSA-2016-0566.html rhn.redhat.com
- http://www.debian.org/security/2016/dsa-3488 www.debian.org
- http://www.ubuntu.com/usn/USN-2912-1 www.ubuntu.com
- https://puppet.com/security/cve/CVE-2016-0739 puppet.com
- https://security.gentoo.org/glsa/201606-12 Third Party Advisory
- https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/ Vendor Advisory
- https://www.libssh.org/security/advisories/CVE-2016-0739.txt Vendor Advisory