Unrated severityNVD Advisory· Published Nov 30, 2012· Updated Apr 29, 2026
CVE-2012-4561
CVE-2012-4561
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.
Affected products
6cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*+ 5 more
- cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*range: <=0.5.2
- cpe:2.3:a:libssh:libssh:0.4.7:*:*:*:*:*:*:*
- cpe:2.3:a:libssh:libssh:0.4.8:*:*:*:*:*:*:*
- cpe:2.3:a:libssh:libssh:0.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:libssh:libssh:0.5.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:libssh:libssh:0.5.1:*:*:*:*:*:*:*
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
13- www.libssh.org/2012/11/20/libssh-0-5-3-security-release/nvdVendor Advisory
- lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.htmlnvd
- lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.htmlnvd
- lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.htmlnvd
- lists.opensuse.org/opensuse-updates/2012-12/msg00016.htmlnvd
- lists.opensuse.org/opensuse-updates/2013-01/msg00021.htmlnvd
- www.debian.org/security/2012/dsa-2577nvd
- www.mandriva.com/security/advisoriesnvd
- www.openwall.com/lists/oss-security/2012/11/20/3nvd
- www.securityfocus.com/bid/56604nvd
- www.ubuntu.com/usn/USN-1640-1nvd
- bugzilla.redhat.com/show_bug.cginvd
- exchange.xforce.ibmcloud.com/vulnerabilities/80220nvd
News mentions
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