Mail in Apple Mac OS X before 10.6.3 does not properly enforce the key usage extension during processing of a keychain that specifies multiple certificates for an e-mail recipient, which might make it easier for remote attackers to obtain sensitive information via a brute-force attack on a weakly encrypted e-mail message.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mac_os_x | Apple | * | 10.6.2 (including) |
| Mac_os_x | Apple | 10.5.0 (including) | 10.5.0 (including) |
| Mac_os_x | Apple | 10.5.1 (including) | 10.5.1 (including) |
| Mac_os_x | Apple | 10.5.2 (including) | 10.5.2 (including) |
| Mac_os_x | Apple | 10.5.3 (including) | 10.5.3 (including) |
| Mac_os_x | Apple | 10.5.4 (including) | 10.5.4 (including) |
| Mac_os_x | Apple | 10.5.5 (including) | 10.5.5 (including) |
| Mac_os_x | Apple | 10.5.6 (including) | 10.5.6 (including) |
| Mac_os_x | Apple | 10.5.7 (including) | 10.5.7 (including) |
| Mac_os_x | Apple | 10.5.8 (including) | 10.5.8 (including) |
| Mac_os_x | Apple | 10.6.0 (including) | 10.6.0 (including) |
| Mac_os_x | Apple | 10.6.1 (including) | 10.6.1 (including) |
| Mac_os_x_server | Apple | * | 10.6.2 (including) |
| Mac_os_x_server | Apple | 10.5.0 (including) | 10.5.0 (including) |
| Mac_os_x_server | Apple | 10.5.1 (including) | 10.5.1 (including) |
| Mac_os_x_server | Apple | 10.5.2 (including) | 10.5.2 (including) |
| Mac_os_x_server | Apple | 10.5.3 (including) | 10.5.3 (including) |
| Mac_os_x_server | Apple | 10.5.4 (including) | 10.5.4 (including) |
| Mac_os_x_server | Apple | 10.5.5 (including) | 10.5.5 (including) |
| Mac_os_x_server | Apple | 10.5.6 (including) | 10.5.6 (including) |
| Mac_os_x_server | Apple | 10.5.7 (including) | 10.5.7 (including) |
| Mac_os_x_server | Apple | 10.5.8 (including) | 10.5.8 (including) |
| Mac_os_x_server | Apple | 10.6.0 (including) | 10.6.0 (including) |
| Mac_os_x_server | Apple | 10.6.1 (including) | 10.6.1 (including) |