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TITLE:
QNX RTOS "inputtrap" Information Disclosure Vulnerability

SECUNIA ADVISORY ID:
SA16569

VERIFY ADVISORY:
http://secunia.com/advisories/16569/

CRITICAL:
Less critical

IMPACT:
Exposure of sensitive information

WHERE:
Local system

OPERATING SYSTEM:
QNX RTOS 6.x
http://secunia.com/product/708/

DESCRIPTION:
Julio Cesar Fort has reported a vulnerability in QNX RTOS, which can
be exploited by malicious, local users to disclose certain sensitive
information.

The vulnerability is caused due to the "inputtrap" command disclosing
certain contents of the user-specified trapfile if an error is
encountered when probing each device specified in the file. This can
be exploited to disclose contents of the "/etc/shadow" file by
specifying it as a trapfile.

Example:
inputtrap -t /etc/shadow start

The vulnerability has been reported in versions 6.1.0 and 6.3. Other
versions may also be affected.

SOLUTION:
Grant only trusted users access to affected systems.

Remove the suid bit from the "inputtrap" command.

PROVIDED AND/OR DISCOVERED BY:
Julio Cesar Fort

ORIGINAL ADVISORY:
http://www.rfdslabs.com.br/advisories/qnx-advs-01-2005.txt

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About:
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