Algorithmic Complexity Affecting python-twisted-web package, versions <0:12.1.0-4.el7
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Test your applications- Snyk ID SNYK-RHEL7-PYTHONTWISTEDWEB-4449398
- published 26 Jul 2021
- disclosed 15 May 2013
Introduced: 15 May 2013
CVE-2013-2099 Open this link in a new tabHow to fix?
Upgrade RHEL:7 python-twisted-web to version 0:12.1.0-4.el7 or higher.
This issue was patched in RHBA-2016:1500.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-twisted-web package and not the python-twisted-web package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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
- http://bugs.python.org/issue17980
- https://access.redhat.com/security/cve/CVE-2013-2099
- https://bugzilla.redhat.com/show_bug.cgi?id=963260
- http://www.openwall.com/lists/oss-security/2013/05/16/6
- http://rhn.redhat.com/errata/RHSA-2014-1690.html
- http://secunia.com/advisories/55107
- http://secunia.com/advisories/55116
- http://www.ubuntu.com/usn/USN-1983-1
- http://www.ubuntu.com/usn/USN-1984-1
- http://www.ubuntu.com/usn/USN-1985-1
- https://access.redhat.com/errata/RHBA-2016:1500