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CVE-2012-4561
CVE information
Published
Last Modified
CVSSv2.0 Severity
Impact Analysis
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..
CVSSv2.0 Score
- Severity
- Medium
- Base Score
- 5/10
- Exploit Score
- 10/10
- Access Vector
- Network
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 2.9/10
- Confidentiality Impact
- None
- Availability Impact
- Partial
- Integrity Impact
- None
Products Affected
CPE | Affected | Vulnerable | Excluding | Edit |
---|---|---|---|---|
cpe:2.3:a:libssh:libssh:0.5.1:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:a:libssh:libssh:0.5.0:rc1:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:a:libssh:libssh:0.4.7:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:a:libssh:libssh:0.5.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:a:libssh:libssh:0.4.8:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* |
Yes
|
- | - |
References
- http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/
- http://www.securityfocus.com/bid/56604
- http://www.openwall.com/lists/oss-security/2012/11/20/3
- https://bugzilla.redhat.com/show_bug.cgi?id=871617
- http://www.debian.org/security/2012/dsa-2577
- http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html
- http://www.ubuntu.com/usn/USN-1640-1
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:175
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80220