CVE-2013-2099

N/A Unknown
Published: October 09, 2013 Modified: April 29, 2026
View on NVD

Description

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.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://bugs.python.org/issue17980
Source: secalert@redhat.com
Patch
http://secunia.com/advisories/55107
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/55116
Source: secalert@redhat.com
Vendor Advisory
http://www.ubuntu.com/usn/USN-1983-1
Source: secalert@redhat.com
http://www.ubuntu.com/usn/USN-1984-1
Source: secalert@redhat.com
http://www.ubuntu.com/usn/USN-1985-1
Source: secalert@redhat.com
http://bugs.python.org/issue17980
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://rhn.redhat.com/errata/RHSA-2014-1690.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/55107
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/55116
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://www.openwall.com/lists/oss-security/2013/05/16/6
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.ubuntu.com/usn/USN-1983-1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.ubuntu.com/usn/USN-1984-1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.ubuntu.com/usn/USN-1985-1
Source: af854a3a-2127-422b-91ae-364da2661108
https://access.redhat.com/errata/RHSA-2016:1166
Source: af854a3a-2127-422b-91ae-364da2661108
https://bugzilla.redhat.com/show_bug.cgi?id=963260
Source: af854a3a-2127-422b-91ae-364da2661108

20 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
3.0%
87th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

python canonical