Scientific Linux Security Update : nfs-utils on SL6.x i386/x86_64

High Nessus Plugin ID 61193

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

The nfs-utils packages provide a daemon for the kernel Network File System (NFS) server, and related tools such as the mount.nfs, umount.nfs, and showmount programs.

A flaw was found in the way nfs-utils performed IP based authentication of mount requests. In configurations where a directory was exported to a group of systems using a DNS wildcard or NIS (Network Information Service) netgroup, an attacker could possibly gain access to other directories exported to a specific host or subnet, bypassing intended access restrictions. (CVE-2011-2500)

It was found that the mount.nfs tool did not handle certain errors correctly when updating the mtab (mounted file systems table) file. A local attacker could use this flaw to corrupt the mtab file.
(CVE-2011-1749)

This update also fixes several bugs and adds an enhancement.

Users of nfs-utils are advised to upgrade to these updated packages, which contain backported patches to resolve these issues and add this enhancement. After installing this update, the nfs service will be restarted automatically.

Solution

Update the affected nfs-utils and / or nfs-utils-debuginfo packages.

See Also

http://www.nessus.org/u?0470fa08

Plugin Details

Severity: High

ID: 61193

File Name: sl_20111206_nfs_utils_on_SL6_x.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2012/08/01

Updated: 2019/10/25

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2011/12/06

Reference Information

CVE: CVE-2011-1749, CVE-2011-2500