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TITLE:
rxvt X11 Display Security Issue

SECUNIA ADVISORY ID:
SA29576

VERIFY ADVISORY:
http://secunia.com/advisories/29576/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
rxvt 2.7.x
http://secunia.com/product/1134/

DESCRIPTION:
Bernhard R. Link has reported a security issue in rxvt, which can be
exploited by malicious, local users to gain escalated privileges.

The security issue is caused due to the program using ":0" as it's
X11 display if the DISPLAY environment variable is missing. This can
be exploited to execute arbitrary commands with the privileges of the
user running rxvt via a malicious X server.

The security issue is reported in version 2.6.4. Other versions may
also be affected.

SOLUTION:
Do not run rxvt on untrusted systems.

Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Bernhard R. Link

ORIGINAL ADVISORY:
http://article.gmane.org/gmane.comp.security.oss.general/122

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About:
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Please Note:
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Secunia NEVER sends attached files with advisories.
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