The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not prevent use of the _POSIX_SPAWN_DISABLE_ASLR and _POSIX_SPAWN_ALLOW_DATA_EXEC flags for setuid and setgid programs, which allows local users to bypass intended access restrictions via a wrapper program that calls the posix_spawnattr_setflags function.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mac_os_x | Apple | 10.8.0 (including) | 10.8.0 (including) |
| Mac_os_x | Apple | 10.8.1 (including) | 10.8.1 (including) |
| Mac_os_x | Apple | 10.8.2 (including) | 10.8.2 (including) |
| Mac_os_x | Apple | 10.8.3 (including) | 10.8.3 (including) |
| Mac_os_x | Apple | 10.8.4 (including) | 10.8.4 (including) |
References
- http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
- http://www.syscan.org/index.php/sg/program/day/2
- http://antid0te.com/syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
- http://www.syscan.org/index.php/sg/program/day/2