CVE-2020-3566 — Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

CISA KEV listed Added November 3, 2021 Remediate by May 3, 2022

Description

Cisco IOS XR Distance Vector Multicast Routing Protocol (DVMRP) incorrectly handles Internet Group Management Protocol (IGMP) packets. Exploitation could allow an unauthenticated, remote attacker to immediately crash the IGMP process or make it consume available memory and eventually crash.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2020-3566

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