The vfs_hang_addrlist function in sys/kern/vfs_export.c in the NFS server implementation in the kernel in FreeBSD 8.3 and 9.x through 9.1-RELEASE-p5 controls authorization for host/subnet export entries on the basis of group information sent by the client, which allows remote attackers to bypass file permissions on NFS filesystems via crafted requests.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Freebsd | Freebsd | 8.3 (including) | 8.3 (including) |
| Freebsd | Freebsd | 9.0 (including) | 9.0 (including) |
| Freebsd | Freebsd | 9.1 (including) | 9.1 (including) |
| Freebsd | Freebsd | 9.1-p4 (including) | 9.1-p4 (including) |
| Freebsd | Freebsd | 9.1-p5 (including) | 9.1-p5 (including) |