FreeBSD : FreeBSD -- Incorrect privilege validation in the NFS server (e5d2442d-5e76-11e6-a6c3-14dae9d210b8)

Medium Nessus Plugin ID 92834


The remote FreeBSD host is missing one or more security-related updates.


Problem Description :

The kernel incorrectly uses client supplied credentials instead of the one configured in exports(5) when filling out the anonymous credential for a NFS export, when -network or -host restrictions are used at the same time.

Impact :

The remote client may supply privileged credentials (e.g. the root user) when accessing a file under the NFS share, which will bypass the normal access checks.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 92834

File Name: freebsd_pkg_e5d2442d5e7611e6a6c314dae9d210b8.nasl

Version: $Revision: 2.1 $

Type: local

Published: 2016/08/10

Modified: 2016/08/10

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:FreeBSD-kernel, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/08/09

Vulnerability Publication Date: 2013/07/06

Reference Information

CVE: CVE-2013-4851

BID: 61484

OSVDB: 95820

FreeBSD: SA-13:08.nfsserver