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EGI CSIRT:Alerts/intel-28-06-2010

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EGI CSIRT ADVISORY [EGI-ADV-20100628]

Title: Moderate Impact Vulnerability In Intel Compiler Suite
Date:  June 28th 2010
URL:   https://wiki.egi.eu/wiki/EGI_CSIRT:Alerts/intel-28-06-2010


Summary

A vulnerability caused by bad file permissions has been identified in
products belonging to the Intel compiler suite. The vulnerability can be
used by local attackers to compromise other users' accounts.

This advisory is based on publically available information and
investigations performed by the EGI Security Vulnerability Group
and the EGI CSIRT.


Details

During the installation of the Intel Math Kernel Library (MKL -
http://software.intel.com/en-us/intel-mkl/) several files are installed
world-writable, including configuration files that are intended to be
sourced by all users of the MKL libraries. This makes it trivial for a
local attacker to compromise the accounts of other users.

It appears that these issues were quietly corrected in December 2009.
However, MKL components are included in several different products in
the Intel compiler suite, which makes it hard to say exactly which
versions are affected. At the time of writing, no advisory about the
issue is available from Intel.


Recommended Actions

This vulnerability can easily be corrected by searching for
world-writable files in the Intel installation directory tree, e.g. with

 find /opt/intel/ -type f -perm -o=w -ls

and fixing the permissions with

 find /opt/intel/ -type f -perm -o=w -print0 | xargs -0 chmod go-w

(please replace "/opt/intel" with any site-specific installation directory).


UPDATE1: Vulnerability In Intel Compiler Suite [EGI-ADV-20100628]
EGI CSIRT ADVISORY UPDATE1: Vulnerability In Intel Compiler Suite EGI-ADV-20100628]
Title: Important Impact Vulnerability In Intel Compiler Suite
Date:  July 21st 2010
URL: https://wiki.egi.eu/wiki/EGI_CSIRT:Alerts/intel-28-06-2010
Summary
This is an update to [EGI-ADV-20100628] as Intel has released a security 
advisory. The vulnerability was caused by bad file permissions in products belonging to  the Intel compiler suite, especially the Math Kernel   Library, and can be used by local attackers to elevate privileges.
This advisory is based on publically available information and investigations performed by the EGI Security Vulnerability Group and the EGI CSIRT.
Details
https://wiki.egi.eu/wiki/EGI_CSIRT:Alerts/intel-28-06-2010
For detailed information see original Intel Advisory:
http://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00025&languageid=en-fr
Affected versions: Intel MKL instances < 10.2
Recommended Actions
Affected users are recommended to:
1.     Uninstall Intel MKL instances prior to version 10.2
2.     Install Intel MKL 10.2 or later
Updated Intel MKL is available at http://software.intel.com/en-us/intel-mkl/.
If you are unable to upgrade or would like more information, please contact Intel Support (http://premier.intel.com).
Or correct the vulnerability by searching for world-writable files in the Intel installation directory tree, e.g. with
 find /opt/intel/ -type f -perm -o=w -ls
and fixing the permissions with
 find /opt/intel/ -type f -perm -o=w -print0 | xargs -0 chmod go-w
(please replace "/opt/intel" with any site-specific installation directory).