CVE-2016-0739
libssh - security update
5.9
MEDIUM
CVSS 3.1
EPSS 3.8%
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."
How to fix CVE-2016-0739
To remediate CVE-2016-0739, upgrade the affected package to a fixed version below.
- —upgrade to 0.6.3-4.3 or later
- —upgrade to 0.4.5-3+squeeze3 or later
- —upgrade to 0.5.4-1+deb7u3 or later
Is CVE-2016-0739 being exploited?
Low — EPSS is 3.8%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 0.6.3-4.3
- from 0, < 0.4.5-3+squeeze3
- from 0, < 0.5.4-1+deb7u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |