The blowfish mode in DAR before 2.3.4 uses weak Blowfish-CBC cryptography by (1) discarding random bits by the blowfish::make_ivec function in libdar/crypto.cpp that results in predictable and repeating IV values, and (2) direct use of a password for keying, which makes it easier for context-dependent attackers to decrypt files.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Dar | Dar | * | 2.3.3 (including) |
| Dar | Ubuntu | dapper | * |
| Dar | Ubuntu | devel | * |
| Dar | Ubuntu | edgy | * |
| Dar | Ubuntu | feisty | * |
| Dar | Ubuntu | gutsy | * |
| Dar | Ubuntu | hardy | * |
| Dar | Ubuntu | intrepid | * |
| Dar | Ubuntu | jaunty | * |
| Dar | Ubuntu | karmic | * |
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=425335
- http://osvdb.org/38189
- http://osvdb.org/38190
- http://secunia.com/advisories/25953
- http://www.securityfocus.com/bid/24930
- https://sourceforge.net/forum/forum.php?forum_id=711619
- https://sourceforge.net/forum/forum.php?forum_id=711620
- https://sourceforge.net/tracker/index.php?func=detail\u0026aid=1730439\u0026group_id=65612\u0026atid=511612
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=425335
- http://osvdb.org/38189
- http://osvdb.org/38190
- http://secunia.com/advisories/25953
- http://www.securityfocus.com/bid/24930
- https://sourceforge.net/forum/forum.php?forum_id=711619
- https://sourceforge.net/forum/forum.php?forum_id=711620
- https://sourceforge.net/tracker/index.php?func=detail\u0026aid=1730439\u0026group_id=65612\u0026atid=511612