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The Secunia Software Inspector is a free service that detects insecure
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TITLE:
OpenBSD ICMP6 Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA23830

VERIFY ADVISORY:
http://secunia.com/advisories/23830/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

OPERATING SYSTEM:
OpenBSD 4.0
http://secunia.com/product/12486/
OpenBSD 3.x
http://secunia.com/product/100/

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

The vulnerability is caused due to an error within the handling of
certain ICMP6 echo requests. This can be exploited to cause an
infinite loop by sending a specially crafted ICMP6 echo request.

The vulnerability is reported in OpenBSD 3.9 and 4.0. Other versions
may also be affected.

SOLUTION:
Apply patches.

OpenBSD 3.9:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/018_icmp6.patch

OpenBSD 4.0:
ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.0/common/008_icmp6.patch

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.openbsd.org/errata.html#icmp6

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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.

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http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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