Description
sys/nfsclient/nfs_vfsops.c in the NFS client in the kernel in FreeBSD 7.2 through 8.1-PRERELEASE, when vfs.usermount is enabled, does not validate the length of a certain fhsize parameter, which allows local users to gain privileges via a crafted mount request.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 2
- FreeBSD 8.0/7.3/7.2 - 'nfs_mount()' Local Privilege Escalation EDB-14002 · local · Jun 23, 2010 · verified
- FreeBSD - 'mountnfs()' Denial of Service EDB-14003 · dos · Jun 23, 2010 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- FreeBSD-SA-10:06 vendor-advisory
- 14003 exploit
- 14002 exploit
- 1024039 vdb-entry