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CVE-2009-1630

Description

The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.

POC

Reference

- http://www.ubuntu.com/usn/usn-793-1

- http://www.vmware.com/security/advisories/VMSA-2009-0016.html

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9990

Github

No PoCs found on GitHub currently.