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TITLE:
Sun Solaris IP Tunnel SIOCGTUNPARAM IOCTL Vulnerability

SECUNIA ADVISORY ID:
SA33160

VERIFY ADVISORY:
http://secunia.com/advisories/33160/

CRITICAL:
Less critical

IMPACT:
Privilege escalation, DoS

WHERE:
Local system

OPERATING SYSTEM:
Sun Solaris 10
http://secunia.com/advisories/product/4813/

DESCRIPTION:
A vulnerability has been reported in Sun Solaris, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) or to potentially gain escalated privileges.

The vulnerability is caused due to a NULL-pointer dereference error
in the IP tunnel implementation. This can be exploited to cause a
crash or to potentially execute arbitrary code with escalated
privileges via a specially crafted SIOCGTUNPARAM IOCTL request.

The vulnerability is reported in Solaris 10 and OpenSolaris for both
the SPARC and x86 platforms.

SOLUTION:
Apply patches.

-- SPARC Platform --

Solaris 10:
Apply patch 138888-01 or later.

OpenSolaris:
Fixed in build snv_77.

-- x86 Platform --

Solaris 10:
Apply patch 138889-01 or later.

OpenSolaris:
Fixed in build snv_77.

PROVIDED AND/OR DISCOVERED BY:
Tobias Klein

ORIGINAL ADVISORY:
Sun Microsystems:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-242266-1

Tobias Klein:
http://www.trapkit.de/advisories/TKADV2008-015.txt

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