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SGI IRIX "runpriv" Arbitrary Shell Command Injection Vulnerability
Secunia Advisory: SA17131
Release Date: 2005-10-11
Popularity: 6,904 views

Critical:
Less critical
Impact: Security Bypass
Privilege escalation
Where: Local system
Solution Status: Vendor Patch

OS:SGI IRIX 6.5.x

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CVE reference:CVE-2005-2925


Description:
A vulnerability has been reported in IRIX, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.

The vulnerability is caused due to an input validation error in "runpriv" when using the user supplied command line to run authorised commands with root privileges. This can be exploited to execute arbitrary shell commands with root privileges by appending a string containing additional commands to execute to the end of an authorized command string.

Successful exploitation requires that the user is granted permissions to execute some binaries in "/usr/sysadm/privbin".

The vulnerability has been reported in versions 6.5.22, 6.5.27, and 6.5.28. Prior versions may also be affected.

Solution:
Apply patch 7004.

IRIX 6.5.27:
ftp://patches.sgi.com/support/free/security/patches/6.5.27/patch7004.tar

IRIX 6.5.28:
ftp://patches.sgi.com/support/free/security/patches/6.5.28/patch7004.tar

Version 6.5.26 and prior are no longer supported.

Provided and/or discovered by:
Discovered by anonymous person and reported via iDEFENSE.

Original Advisory:
SGI:
ftp://patches.sgi.com/support/free/security/advisories/20051001-01-P.asc

iDEFENSE:
http://www.idefense.com/application/poi/display?id=312&type=vulnerabilities


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