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Cisco IOS IPv6 Packet Handling Vulnerability
Secunia Advisory: SA16272
Release Date: 2005-07-29
Last Update: 2005-08-05
Popularity: 15,130 views

Critical:
Moderately critical
Impact: DoS
System access
Where: From local network
Solution Status: Vendor Patch

OS:Cisco IOS 12.x
Cisco IOS R12.x

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CVE reference:CVE-2005-2451


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.

Changelog:
2005-08-01: Added link to US-CERT vulnerability note.
2005-08-05: Added CVE reference.

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

Other References:
US-CERT VU#930892:
http://www.kb.cert.org/vuls/id/930892


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