Medium severity5.9NVD Advisory· Published Apr 13, 2016· Updated Jun 17, 2026
CVE-2016-0739
CVE-2016-0739
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."
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
18cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*+ 2 more
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- osv-coords8 versionspkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012pkg:rpm/suse/libssh&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP1
< 0.2-5.22.1+ 7 more
- (no CPE)range: < 0.2-5.22.1
- (no CPE)range: < 0.6.3-11.1
- (no CPE)range: < 0.6.3-11.1
- (no CPE)range: < 0.2-5.22.1
- (no CPE)range: < 0.6.3-11.1
- (no CPE)range: < 0.6.3-11.1
- (no CPE)range: < 0.6.3-11.1
- (no CPE)range: < 0.6.3-11.1
Patches
Vulnerability mechanics
References
10- security.gentoo.org/glsa/201606-12nvdThird Party Advisory
- www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/nvdVendor Advisory
- www.libssh.org/security/advisories/CVE-2016-0739.txtnvdVendor Advisory
- lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.htmlnvd
- lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.htmlnvd
- lists.opensuse.org/opensuse-updates/2016-03/msg00111.htmlnvd
- rhn.redhat.com/errata/RHSA-2016-0566.htmlnvd
- www.debian.org/security/2016/dsa-3488nvd
- www.ubuntu.com/usn/USN-2912-1nvd
- puppet.com/security/cve/CVE-2016-0739nvd
News mentions
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