CVE-2013-2099: Uncontrolled Resource Consumption

October 9, 2013 (updated June 8, 2016)

Algorithmic complexity vulnerability in the ssl.match_hostname function 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.

References

bugs.python.org/issue17980
bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-2099

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