CVE-2013-2099

Advisory

Algorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows remote attackers to cause a denial of service (CPU consumption) via multiple wildcard characters in the common name in a certificate.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2099
• http://secunia.com/advisories/55116
• http://secunia.com/advisories/55107
• https://bugzilla.redhat.com/show_bug.cgi?id=963260
• http://www.ubuntu.com/usn/USN-1983-1
• http://www.ubuntu.com/usn/USN-1985-1
• http://bugs.python.org/issue17980
• http://www.openwall.com/lists/oss-security/2013/05/16/6
• http://www.ubuntu.com/usn/USN-1984-1
• http://rhn.redhat.com/errata/RHSA-2014-1690.html
• https://access.redhat.com/errata/RHSA-2016:1166