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 man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
redhatCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 83%
VendorProductVersion
redhatenterprise_linux
7.0
canonicalubuntu_linux
12.04
canonicalubuntu_linux
14.04
canonicalubuntu_linux
15.10
libsshlibssh
𝑥
≤ 0.7.2
debiandebian_linux
7.0
debiandebian_linux
8.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libssh
bullseye (security)
0.9.8-0+deb11u1
fixed
bullseye
0.9.8-0+deb11u1
fixed
bookworm
0.10.6-0+deb12u1
fixed
bookworm (security)
0.10.6-0+deb12u1
fixed
sid
0.11.1-1
fixed
trixie
0.11.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libssh
yakkety
Fixed 0.6.3-4.2ubuntu1
released
xenial
Fixed 0.6.3-4.2ubuntu1
released
wily
Fixed 0.6.3-3ubuntu3.2
released
trusty
Fixed 0.6.1-0ubuntu3.3
released
precise
Fixed 0.5.2-1ubuntu0.12.04.6
released
Common Weakness Enumeration
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
http://www.ubuntu.com/usn/USN-2912-1
https://puppet.com/security/cve/CVE-2016-0739
https://security.gentoo.org/glsa/201606-12
https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
https://www.libssh.org/security/advisories/CVE-2016-0739.txt
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
http://www.ubuntu.com/usn/USN-2912-1
https://puppet.com/security/cve/CVE-2016-0739
https://security.gentoo.org/glsa/201606-12
https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
https://www.libssh.org/security/advisories/CVE-2016-0739.txt