CVE-2012-4561
EPSS 3.7%
Description
The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers to cause a denial of service (crash) via unspecified vectors.
How to fix CVE-2012-4561
To remediate CVE-2012-4561, upgrade the affected package to a fixed version below.
- Debian/libssh—upgrade to 0.5.3-1 or later
Is CVE-2012-4561 being exploited?
Low — EPSS is 3.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.5.3-1