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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Python | Python | 3.2.0 (including) | 3.2.0 (including) |
| Python | Python | 3.2.1 (including) | 3.2.1 (including) |
| Python | Python | 3.2.2 (including) | 3.2.2 (including) |
| Python | Python | 3.2.3 (including) | 3.2.3 (including) |
| Python | Python | 3.2.4 (including) | 3.2.4 (including) |
| Python | Python | 3.2.5 (including) | 3.2.5 (including) |
| Python | Python | 3.3.0 (including) | 3.3.0 (including) |
| Python | Python | 3.3.1 (including) | 3.3.1 (including) |
| Python | Python | 3.3.2 (including) | 3.3.2 (including) |