Red Hat Enterprise Linux 5 RHSA-2009:0427-01 Important: udev Local Attacker
red hat
April 16, 2009
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 S...
Solution
Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.
This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
Summary
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.
References
https://www.cve.org/CVERecord?id=CVE-2009-1185 https://access.redhat.com/security/updates/classification#important
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386:
libvolume_id-095-14.20.el5_3.i386.rpm
udev-095-14.20.el5_3.i386.rpm
udev-debuginfo-095-14.20.el5_3.i386.rpm
x86_64:
libvolume_id-095-14.20.el5_3.i386.rpm
libvolume_id-095-14.20.el5_3.x86_64.rpm
udev-095-14.20.el5_3.x86_64.rpm
udev-debuginfo-095-14.20.el5_3.i386.rpm
udev-debuginfo-095-14.20.el5_3.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
i386:
libvolume_id-devel-095-14.20.el5_3.i386.rpm
udev-debuginfo-095-14.20.el5_3.i386.rpm
x86_64:
libvolume_id-devel-095-14.20.el5_3.i386.rpm
libvolume_id-devel-095-14.20.el5_3.x86_64.rpm
udev-debuginfo-095-14.20.el5_3.i386.rpm
udev-debuginfo-095-14.20.el5_3.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386:
libvolume_id-095-14.20.el5_3.i386.rpm
libvolume_id-devel-095-14.20.el5_3.i386.rpm
udev-095-14.20.el5_3.i386.rpm
udev-debuginfo-095-14.20.el5_3.i386.rpm
ia64:
libvolume_id-095-14.20.el5_3.ia64.rpm
libvolume_id-devel-095-14.20.el5_3.ia64.rpm
udev-095-14.20.el5_3.ia64.rpm
udev-debuginfo-095-14.20.el5_3.ia64.rpm
ppc:
libvolume_id-095-14.20.el5_3.ppc.rpm
libvolume_id-095-14.20.el5_3.ppc64.rpm
libvolume_id-devel-095-14.20.el5_3.ppc.rpm
libvolume_id-devel-095-14.20.el5_3.ppc64.rpm
udev-095-14.20.el5_3.ppc.rpm
udev-debuginfo-095-14.20.el5_3.ppc.rpm
Read the Full Advisory
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Advisory ID: RHSA-2009:0427-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2009:0427.html
Issue date: 2009-04-16
Topic
Updated udev packages that fix one security issue are now available for RedHat Enterprise Linux 5.This update has been rated as having important security impact by the RedHat Security Response Team.
Relevant Releases Architectures
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Bugs Fixed
495051 - CVE-2009-1185 udev: Uncheck origin of NETLINK messages
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