RHEL 5 : udev (RHSA-2009:0427)

High Nessus Plugin ID 36177


The remote Red Hat host is missing one or more security updates.


Updated udev packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

udev provides a user-space API and implements a dynamic device directory, providing only the devices present on the system. udev replaces devfs in order to provide greater hot plug functionality.
Netlink is a datagram oriented service, used to transfer information between kernel modules and user-space processes.

It was discovered that udev did not properly check the origin of Netlink messages. A local attacker could use this flaw to gain root privileges via a crafted Netlink message sent to udev, causing it to create a world-writable block device file for an existing system block device (for example, the root file system). (CVE-2009-1185)

Red Hat would like to thank Sebastian Krahmer of the SUSE Security Team for responsibly reporting this flaw.

Users of udev are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, the udevd daemon will be restarted automatically.


Update the affected libvolume_id, libvolume_id-devel and / or udev packages.

See Also



Plugin Details

Severity: High

ID: 36177

File Name: redhat-RHSA-2009-0427.nasl

Version: $Revision: 1.24 $

Type: local

Agent: unix

Published: 2009/04/17

Modified: 2017/01/03

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.2

Temporal Score: 5.6

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libvolume_id, p-cpe:/a:redhat:enterprise_linux:libvolume_id-devel, p-cpe:/a:redhat:enterprise_linux:udev, cpe:/o:redhat:enterprise_linux:5, cpe:/o:redhat:enterprise_linux:5.3

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2009/04/16

Exploitable With


Core Impact

Metasploit (Linux udev Netlink Local Privilege Escalation)

Reference Information

CVE: CVE-2009-1185

BID: 34536

OSVDB: 53810

RHSA: 2009:0427

CWE: 20