CVE-2012-4561
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
6.3 Medium
AI Score
Confidence
Low
0.104 Low
EPSS
Percentile
95.0%
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 configurations
References
lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html
lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html
lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html
lists.opensuse.org/opensuse-updates/2012-12/msg00016.html
lists.opensuse.org/opensuse-updates/2013-01/msg00021.html
www.debian.org/security/2012/dsa-2577
www.libssh.org/2012/11/20/libssh-0-5-3-security-release/
www.mandriva.com/security/advisories?name=MDVSA-2012:175
www.openwall.com/lists/oss-security/2012/11/20/3
www.securityfocus.com/bid/56604
www.ubuntu.com/usn/USN-1640-1
bugzilla.redhat.com/show_bug.cgi?id=871617
exchange.xforce.ibmcloud.com/vulnerabilities/80220
Related
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
6.3 Medium
AI Score
Confidence
Low
0.104 Low
EPSS
Percentile
95.0%