22963 : QNX Neutrino RTOS phfont Path Subversion Privilege Escalation
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Info

Last Modified

about 1 year ago

Percent Complete

95%

Disclosure

Feb 07, 2006

Discovery

Sep 29, 2004

Dates

Exploit

Unknown

Solution

Unknown

Keywords

No Keywords

Description

QNX Neutrino RTOS contains a flaw that may allow a local attacker to gain increased privileges. The flaw is due to the phfont program calling the phfontphf utility in an insecure fashion. By manipulating the PHFONT and PHOTON2_PATH environment variables, it is possible to call an arbitrary file that will be run with root privileges.

Classification

Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Rumored / Private

Solution

Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround: Restrict access to the phfont binary, or remove SUID privileges from it

Products

QNX Software Systems

QNX Neutrino RTOS

6.2.1

References

Security Tracker: 1015599
Secunia Advisory ID: 18750
CVE ID: 2006-0620 (see also: NVD)
ISS X-Force ID: 24555
FrSIRT Advisory: ADV-2006-0474
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2006-02/0118.html
Other Advisory URL: http://www.idefense.com/intelligence/vulnerabilities/display.php?id=383
Vendor URL: http://www.qnx.com/products/rtos/

Credit

Knud Hojgaard - http://kokanin.dtors.net/

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