CVE-2020-3566

high · 8.6Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

Apply updates per vendor instructions.

Added 2021-11-03Remediation due 2022-05-03

A vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust process memory of an affected device. 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. Cisco will release software updates that address this vulnerability.

8.6

CVSS

3.7%

EPSS (exploit prob.)

89th

EPSS percentile

2020-08-29

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weaknesses

CWE-400CWE-770

Affected products

Vendor	Product	Affected versions
cisco	ios_xr	6.4.2
cisco	asr_9001	all versions
cisco	asr_9006	all versions
cisco	asr_9010	all versions
cisco	asr_9901	all versions
cisco	asr_9904	all versions
cisco	asr_9906	all versions
cisco	asr_9910	all versions
cisco	asr_9912	all versions
cisco	asr_9922	all versions

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2020-3566