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[SA29148] D-Bus "send_interface" Security Policy Bypass

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Feb 28 2008 - 16:47:04 CST

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TITLE:
D-Bus "send_interface" Security Policy Bypass

SECUNIA ADVISORY ID:
SA29148

VERIFY ADVISORY:
http://secunia.com/advisories/29148/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
Local system

SOFTWARE:
D-Bus 1.x
http://secunia.com/product/12896/

DESCRIPTION:
A security issue has been reported in D-Bus, which can be exploited
by malicious, local users to bypass certain security restrictions.

The security issue is caused due to an error in the processing of
messages with a NULL interface, which can be exploited to bypass
security policy directives of the form "<allow send_interface=
[interface]/>".

The security issue is reported in versions prior to 1.1.20 or 1.0.3.

SOLUTION:
Update to version 1.1.20 or 1.0.3.

PROVIDED AND/OR DISCOVERED BY:
Havoc Pennington

ORIGINAL ADVISORY:
http://www.freedesktop.org/wiki/Software/dbus
http://lists.freedesktop.org/archives/dbus/2008-February/009401.html

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