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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 84.1% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-04-13 17:00Z10 YR AGO
- Last updated
- 2024-08-05 22:30Z2 YR AGO
- Reserved
- 2015-12-16
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 6938e243eeac837c2084d714e1098504863aa8029ad259f202cbdd8462c7855d
05 Affected products
06 References
- lists.fedoraproject.orgFEDORA-2016-d9f950c779http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html
- www.ubuntu.comUSN-2912-1http://www.ubuntu.com/usn/USN-2912-1
- www.libssh.orghttps://www.libssh.org/security/advisories/CVE-2016-0739.txt
- puppet.comhttps://puppet.com/security/cve/CVE-2016-0739
- lists.fedoraproject.orgFEDORA-2016-dc9e8da03chttp://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html
- security.gentoo.orgGLSA-201606-12https://security.gentoo.org/glsa/201606-12
- www.debian.orgDSA-3488http://www.debian.org/security/2016/dsa-3488
- rhn.redhat.comRHSA-2016:0566http://rhn.redhat.com/errata/RHSA-2016-0566.html
- www.libssh.orghttps://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
- lists.opensuse.orgopenSUSE-SU-2016:0880http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html
07 Fixed in
Debian 12
- libssh Fixed in 0.6.3-4.3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libssh Fixed in 0.6.3-4.3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libssh Fixed in 0.6.3-4.3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- libssh Fixed in 0.6.1-0ubuntu3.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- libssh Fixed in 0.6.3-4.2ubuntu1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.