TITLE:
QNX RTOS FTP Client "QUOTE" Command Format String Vulnerability

SECUNIA ADVISORY ID:
SA12533

VERIFY ADVISORY:
http://secunia.com/advisories/12533/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

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 gain escalated privileges.

The vulnerability is caused due to a format string error in the FTP
client utility (ftp) when handling "QUOTE" FTP commands. This can be
exploited by passing a specially crafted string containing format
string specifiers as argument to the affected command.

Successful exploitation may reportedly allow execution of arbitrary
code with group "bin" privileges.

The vulnerability has been reported in version 6.1. Other versions
may also be affected.

SOLUTION:
The vendor was contacted but did not reply.

Remove the setgid bit on the FTP client utility.

PROVIDED AND/OR DISCOVERED BY:
Julio Cesar Fort

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