Detections
Analytics
RHEL 6 : nfs-utils (RHSA-2011:1534)
high Nessus Plugin ID 57015
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
Updated nfs-utils packages that fix two security issues, various bugs, and add one enhancement are now available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having low security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
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.
Documentation for these bug fixes and the enhancement will be available shortly from the Technical Notes document, linked to in the References section.
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
https://access.redhat.com/security/cve/cve-2011-1749
https://access.redhat.com/security/cve/cve-2011-2500
Plugin Details
Severity: High
ID: 57015
File Name: redhat-RHSA-2011-1534.nasl
Version: 1.20
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 12/6/2011
Updated: 1/14/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:nfs-utils, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:nfs-utils-debuginfo
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 12/6/2011
Vulnerability Publication Date: 2/15/2014
Reference Information
CVE: CVE-2011-1749, CVE-2011-2500
RHSA: 2011:1534