CVSS 3.0
5.9 mediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NCVE-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."
Severity
- EPSS
- 2.4% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
- CWE
- CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Affected
- canonical:ubuntu_linux
- debian:debian_linux
- fedoraproject:fedora
- libssh:libssh
- redhat:enterprise_linux
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