Red Hat: Updated lm_sensors packages fix an insecure file issue
 by Patrick Lenz, in Security - Fri, Nov 11th 2005 04:35 UTC

The lm_sensors package includes a collection of modules for general SMBus access and hardware monitoring. This package requires special support which is not in standard version 2.2 kernels. A bug was found in the way the pwmconfig tool creates temporary files. It is possible that a local attacker could leverage this flaw to overwrite arbitrary files located on the system. Fixed packages are available from updates.redhat.com.

Links: updates.redhat.com

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                   Red Hat Security Advisory

Synopsis:          Low: lm_sensors security update
Advisory ID:       RHSA-2005:825-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-825.html
Issue date:        2005-11-10
Updated on:        2005-11-10
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2005-2672
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1. Summary:

Updated lm_sensors packages that fix an insecure file issue are now available.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Problem description:

The lm_sensors package includes a collection of modules for general SMBus
access and hardware monitoring. This package requires special support which
is not in standard version 2.2 kernels.

A bug was found in the way the pwmconfig tool creates temporary files. It
is possible that a local attacker could leverage this flaw to overwrite
arbitrary files located on the system. The Common Vulnerabilities and
Exposures project has assigned the name CVE-2005-2672 to this issue.

Users of lm_sensors are advised to upgrade to these updated packages, which
contain a backported patch that resolves this issue.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via Red Hat Network.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

5. Bug IDs fixed (http://bugzilla.redhat.com/):

166672 - CVE-2005-2672 lm_sensors pwmconfig insecure temporary file usage


6. RPMs required:

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/lm_sensors-2.8.7-2.40.3.src.rpm
196630152fb8a0021e695417b2d81abe  lm_sensors-2.8.7-2.40.3.src.rpm

i386:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
f9aa0903706ad5b78d6fb456e4a73879  lm_sensors-devel-2.8.7-2.40.3.i386.rpm

ia64:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm

x86_64:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
71668d4442fa5d9871d4d0197208c1ce  lm_sensors-2.8.7-2.40.3.x86_64.rpm
7c52e53754616474eae1d9263eba092c  lm_sensors-devel-2.8.7-2.40.3.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/lm_sensors-2.8.7-2.40.3.src.rpm
196630152fb8a0021e695417b2d81abe  lm_sensors-2.8.7-2.40.3.src.rpm

i386:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
f9aa0903706ad5b78d6fb456e4a73879  lm_sensors-devel-2.8.7-2.40.3.i386.rpm

x86_64:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
71668d4442fa5d9871d4d0197208c1ce  lm_sensors-2.8.7-2.40.3.x86_64.rpm
7c52e53754616474eae1d9263eba092c  lm_sensors-devel-2.8.7-2.40.3.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/lm_sensors-2.8.7-2.40.3.src.rpm
196630152fb8a0021e695417b2d81abe  lm_sensors-2.8.7-2.40.3.src.rpm

i386:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
f9aa0903706ad5b78d6fb456e4a73879  lm_sensors-devel-2.8.7-2.40.3.i386.rpm

ia64:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm

x86_64:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
71668d4442fa5d9871d4d0197208c1ce  lm_sensors-2.8.7-2.40.3.x86_64.rpm
7c52e53754616474eae1d9263eba092c  lm_sensors-devel-2.8.7-2.40.3.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/lm_sensors-2.8.7-2.40.3.src.rpm
196630152fb8a0021e695417b2d81abe  lm_sensors-2.8.7-2.40.3.src.rpm

i386:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
f9aa0903706ad5b78d6fb456e4a73879  lm_sensors-devel-2.8.7-2.40.3.i386.rpm

ia64:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm

x86_64:
b7a50e079501018ccef1196551aaef13  lm_sensors-2.8.7-2.40.3.i386.rpm
71668d4442fa5d9871d4d0197208c1ce  lm_sensors-2.8.7-2.40.3.x86_64.rpm
7c52e53754616474eae1d9263eba092c  lm_sensors-devel-2.8.7-2.40.3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2672

8. Contact:

The Red Hat security contact is .  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.
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[Comments are disabled]

Referenced projects lm_sensors - Linux hardware monitoring tools.

 Comments

[»] Wrong kernel version
by Jean Delvare - Nov 29th 2005 06:42:03

"Not in standard version 2.2 kernels" should really read "not in standard version 2.4 kernels." Support for 2.2 kernels was dropped back in version 2.8.0 of lm_sensors, and RHEL 4 is obviously not based on 2.2 kernels anyway.

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