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Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerability

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Multiple Cisco products using Snort 3 may restart unexpectedly if a remote attacker sends crafted GRE traffic exploiting improper handling of nested GRE packets.

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Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine. This vulnerability is due to improper handling of nested GRE traffic. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker t