Rewterz Threat Advisory – CVE-2020-3566 – Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

Severity

High

Analysis Summary

The vulnerability is due to insufficient queue management for Internet Group Management Protocol (IGMP) packets. An attacker could exploit this vulnerability by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to cause memory exhaustion, resulting in instability of other processes. These processes may include, but are not limited to, interior and exterior routing protocols.

Impact

Exhausting process memory

Affected Vendors

Cisco

Affected Products

Cisco IOS XR Software

Remediation

Refer to Cisco advisory for the list of affected products and their respective patches.

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz

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