CVE-2024-20308

CVSS 3.1 Score 8.6 of 10 (high)

Details

Published Mar 27, 2024
Updated: Mar 28, 2024

Summary

CVE-2024-20308 is a vulnerability affecting the IKEv1 fragmentation code in Cisco IOS Software and Cisco IOS XE Software. Maliciously crafted, fragmented IKEv1 packets are not properly reassembled, leading to a heap underflow. An unauthenticated, remote attacker can exploit this issue by sending such packets to an affected device. Successful exploitation could cause the device to reload, resulting in a denial of service (DoS) condition. This vulnerability can be triggered by IPv4 and IPv6 traffic, and only traffic directed to the affected system can be used for exploitation.

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