The utf-16 decoder in Python 3.1 through 3.3 does not update the aligned_end variable after calling the unicode_decode_call_errorhandler function, which allows remote attackers to obtain sensitive information (process memory) or cause a denial of service (memory corruption and crash) via unspecified vectors.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Python | Python | 2.7.0 (including) | 2.7.4 (excluding) |
| Python | Python | 3.2.0 (including) | 3.2.4 (excluding) |
| Python | Python | 3.3.0 (including) | 3.3.3 (excluding) |
| Python3.1 | Ubuntu | lucid | * |
| Python3.1 | Ubuntu | natty | * |
| Python3.2 | Ubuntu | natty | * |
| Python3.2 | Ubuntu | oneiric | * |
| Python3.2 | Ubuntu | precise | * |
| Python3.2 | Ubuntu | upstream | * |
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=670389
- http://bugs.python.org/issue14579
- http://secunia.com/advisories/51087
- http://secunia.com/advisories/51089
- http://www.openwall.com/lists/oss-security/2012/04/25/2
- http://www.openwall.com/lists/oss-security/2012/04/25/4
- http://www.ubuntu.com/usn/USN-1615-1
- http://www.ubuntu.com/usn/USN-1616-1
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=670389
- http://bugs.python.org/issue14579
- http://secunia.com/advisories/51087
- http://secunia.com/advisories/51089
- http://www.openwall.com/lists/oss-security/2012/04/25/2
- http://www.openwall.com/lists/oss-security/2012/04/25/4
- http://www.ubuntu.com/usn/USN-1615-1
- http://www.ubuntu.com/usn/USN-1616-1