Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=963260
- http://www.ubuntu.com/usn/USN-1984-1
- http://secunia.com/advisories/55116
- https://access.redhat.com/errata/RHSA-2016:1166
- http://www.ubuntu.com/usn/USN-1985-1
- http://bugs.python.org/issue17980
- http://secunia.com/advisories/55107
- http://rhn.redhat.com/errata/RHSA-2014-1690.html
- http://www.ubuntu.com/usn/USN-1983-1
- http://www.openwall.com/lists/oss-security/2013/05/16/6
ADP enrichment
No English description supplied.
- https://bugzilla.redhat.com/show_bug.cgi?id=963260
- http://www.ubuntu.com/usn/USN-1984-1
- http://secunia.com/advisories/55116
- https://access.redhat.com/errata/RHSA-2016:1166
- http://www.ubuntu.com/usn/USN-1985-1
- http://bugs.python.org/issue17980
- http://secunia.com/advisories/55107
- http://rhn.redhat.com/errata/RHSA-2014-1690.html
- http://www.ubuntu.com/usn/USN-1983-1
- http://www.openwall.com/lists/oss-security/2013/05/16/6