Information disclosure in Libssh

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."

Vulnerability class: Information Disclosure

EPSS: 0.024 (82.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-0739?
CVE-2016-0739 is a medium-severity vulnerability in Libssh, classified under Information Disclosure. CVSS score: 5.9/10. Published 2016-04-13.
How severe is CVE-2016-0739?
Medium severity. CVSS v3 base score is 5.9 out of 10.