Description
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.
Product(s):
- Sun SunOS 4.1.1
- Sun SunOS 4.1.2
- Sun SunOS 4.1
Question to Ask Vendors:
- Can you confirm whether your systems are affected by CVE-1999-1021, and if so, what steps are you currently taking to mitigate this vulnerability?
- What is your estimated timeline for fully resolving CVE-1999-1021 in your products or services, and how will you communicate updates on this issue to us as your customer?
Recommended Actions:
- Check out the advisory links provided below.