NFS on SunOS 4.1 through 4.1.2 ignores the high order 16 bits in a 32 bit UID, which allows a local user to gain root access if the lower 16 bits are set to 0, as fixed by the NFS jumbo patch upgrade.
| Name | Vendor | Start Version | End Version | 
|---|---|---|---|
| Sunos | Sun | 4.1 (including) | 4.1 (including) | 
| Sunos | Sun | 4.1.1 (including) | 4.1.1 (including) | 
| Sunos | Sun | 4.1.2 (including) | 4.1.2 (including) |