CVE-2013-4851: Freebsd

Medium severity, CVSS 6.4. EPSS: 2.1% chance of exploitation in the next 30 days.

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.

Affected products

• Freebsd Freebsd: version 8.3 only; version 9.0 only; version 9.1 only

Published 2013-07-29. Last modified 2026-06-16.