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TITLE:
Cisco IOS IPv6 Packet Handling Vulnerability

SECUNIA ADVISORY ID:
SA16272

VERIFY ADVISORY:
http://secunia.com/advisories/16272/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From local network

OPERATING SYSTEM:
Cisco IOS R12.x
http://secunia.com/product/50/
Cisco IOS 12.x
http://secunia.com/product/182/

DESCRIPTION:
A vulnerability has been reported in Ciso IOS, which can be exploited
by malicious people to cause a DoS (Denial of Service) or potentially
compromise a vulnerable network device.

The vulnerability is caused due to an unspecified error within the
processing of IPv6 traffic and can be exploited via a specially
crafted IPv6 packet received on a logical interface.

Successful exploitation requires that the packet is sent from a local
network segment and that the device is configured for IPv6.

SOLUTION:
The vendor has issued updated versions (see patch matrix in vendor
advisory).

PROVIDED AND/OR DISCOVERED BY:
The vendor reports that the vulnerability was disclosed at the Black
Hat security conference.

ORIGINAL ADVISORY:
Cisco:
http://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml

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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:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
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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