Vulnerability in Libssh
CVE-2012-4561
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.048 (91.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.048 · newest: 0.048 · change: 0.000
Affected products
- Libssh — versions 0.4.7, 0.4.8, 0.5.0
References
- www.debian.org/security/2012/dsa-2577 (vendor-advisory)
- www.mandriva.com/security/advisories (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi
- www.ubuntu.com/usn/USN-1640-1 (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2013-01/msg00021.html (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2012-12/msg00016.html (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html (vendor-advisory)
- www.openwall.com/lists/oss-security/2012/11/20/3 (mailing-list)
- exchange.xforce.ibmcloud.com/vulnerabilities/80220 (vdb-entry)