Novell NetWare NFS changes "Read Only" programs to setuid root
|netware-nfs-file-ownership (7246)||High Risk|
Novell NetWare NFS modes 1 and 2 for Unix could allow an attacker to gain root privileges, caused by a vulnerability in the file ownership of "Read Only" programs. An attacker can create a "Read Only" program to cause NetWare NFS to change the permissions of the program to setuid root. This allows the attacker to gain root privileges on the system.
Apply the NFS205.exe patch, as listed in Novell Technical Information Document 2940551. See References.
— OR —
Apply any NFS patch that contains a UNIXLIB.NLM later than version 5.04r. See References.
- BugTraq Mailing List, Thu, 8 Jan 1998 10:16:44 -0500: NetWare NFS.
- Novell Technical Information Document 2940551: Ownership of file changing to root in NFS.
- CVE-1999-1382: NetWare NFS mode 1 and 2 implements the Read Only flag in Unix by changing the ownership of a file to root, which allows local users to gain root privileges by creating a setuid program and setting it to Read Only
- OSVDB ID: 11012: Novell NetWare NFS Read Only Unix Flag Local Privilege Escalation
- Novell NetWare
Jan 08, 1998
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