This document contains information to assist Cisco customers in mitigating attempts to exploit this vulnerability. The Crafted IP Option vulnerability can be exploited remotely with no authentication and no user interaction is necessary. Successful exploitation may allow the attacker to cause a Denial of Service (DoS) condition or may allow the attacker to execute arbitrary code. The attack vectors are an Internet Control Message Protocol (ICMP) type 8, type 13, type 15, type 17 packet, Protocol Independent Multicast version 2 (PIMv2) packet, Pragmatic General Multicast (PGM) packet, or URL Rendezvous Directory (URD) packet containing a specific crafted IP option in the packet's IP header. This vulnerability is not covered by a CVE ID.
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