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TITLE:
OpenBSD "ip_ctloutput()" Denial of Service

SECUNIA ADVISORY ID:
SA15722

VERIFY ADVISORY:
http://secunia.com/advisories/15722/

CRITICAL:
Not critical

IMPACT:
DoS

WHERE:
Local system

OPERATING SYSTEM:
OpenBSD 3.x
http://secunia.com/product/100/

DESCRIPTION:
A vulnerability has been reported in OpenBSD, which can be exploited
by malicious, local users to cause a DoS (Denial of Service).

The vulnerability is caused due to an error in the "ip_ctloutput()"
function and can be exploited by using the "getsockopt()" function to
retrieve IPsec credentials for a socket.

Successful exploitation causes a kernel panic.

SOLUTION:
Apply patch.

OpenBSD 3.7:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.7/common/002_getsockopt.patch

OpenBSD 3.6:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.6/common/017_getsockopt.patch

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Stefan Miltchev.

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
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Please Note:
Secunia recommends that you verify all advisories you receive by
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