Vulnerability Description
Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libssh | Libssh | <= 0.5.2 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.h
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.h
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html
- http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html
- http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html
- http://www.debian.org/security/2012/dsa-2577
- http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/Vendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:175
- http://www.openwall.com/lists/oss-security/2012/11/20/3
- http://www.securityfocus.com/bid/56604
- http://www.ubuntu.com/usn/USN-1640-1
- https://bugzilla.redhat.com/show_bug.cgi?id=871612
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80218
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.h
- http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.h
FAQ
What is CVE-2012-4559?
CVE-2012-4559 is a vulnerability with a CVSS score of 6.8 (MEDIUM). Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 funct...
How severe is CVE-2012-4559?
CVE-2012-4559 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2012-4559?
Check the references section above for vendor advisories and patch information. Affected products include: Libssh Libssh.