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
About:
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vulnerabilities.
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