CVE-2013-2099

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.

CVSS v2.0 4.3 MEDIUM

4.3^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://secunia.com/advisories/55116	Vendor Advisory
http://secunia.com/advisories/55107	Vendor Advisory
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	Patch
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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:python:python:3.3.2:::::::*
	cpe:2.3:a:python:python:3.2.2:::::::*
	cpe:2.3:a:python:python:3.2.5:::::::*
	cpe:2.3:a:python:python:3.2.1:::::::*
	cpe:2.3:a:python:python:3.2.0:::::::*
	cpe:2.3:a:python:python:3.3.1:::::::*
	cpe:2.3:a:python:python:3.2.3:::::::*
	cpe:2.3:a:python:python:3.3.0:::::::*
	cpe:2.3:a:python:python:3.2.4:::::::*

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:13.04:::::::*
	cpe:2.3:o:canonical:ubuntu_linux:12.10:::::::*
	cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:::::*

Information

Published : 2013-10-09 07:53

Updated : 2023-02-12 20:42

NVD link : CVE-2013-2099

Mitre link : CVE-2013-2099

JSON object : View

CWE

CWE-399

Resource Management Errors

Products Affected

canonical

ubuntu_linux

python

python

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4.3 /10