CVE-2013-2099
Python 3.2.x and 3.3.x - Denial of Service via SSL Certificate Common Name Wildcard Handling
Title source: llmDescription
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.
References (10)
Core 10
Core References
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1985-1
Issue Tracking x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=963260
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1984-1
Vendor Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/55116
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2016:1166
Patch x_refsource_confirm
http://bugs.python.org/issue17980
Vendor Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/55107
Vendor Advisory vendor-advisory
x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2014-1690.html
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1983-1
Mailing List mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2013/05/16/6
Scores
EPSS
0.0298
EPSS Percentile
86.7%
Details
CWE
CWE-399
Status
published
Products (12)
canonical/ubuntu_linux
12.04
canonical/ubuntu_linux
12.10
canonical/ubuntu_linux
13.04
python/python
3.2.0
python/python
3.2.1
python/python
3.2.2
python/python
3.2.3
python/python
3.2.4
python/python
3.2.5
python/python
3.3.0
... and 2 more
Published
Oct 09, 2013
Tracked Since
Feb 18, 2026