CVE-2020-3569

HIGHCISA KEV

8.6

Description

Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.

CVE Details

CVSS v3.1 Score8.6

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/23/2020

Last Modified10/28/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorCisco

ProductIOS XR

Vulnerability NameCisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

KEV Date Added2021-11-03

Remediation Due Date2022-05-03

Ransomware UseUnknown

Affected Products

cisco:asr_9000vcisco:asr_9001cisco:asr_9006cisco:asr_9010cisco:asr_9901cisco:asr_9903cisco:asr_9904cisco:asr_9906cisco:asr_9910cisco:asr_9912cisco:asr_9922cisco:crscisco:crs-1_16-slot_line_card_chassiscisco:crs-1_16-slot_single-shelf_systemcisco:crs-1_4-slot_single-shelf_systemcisco:crs-1_8-slot_line_card_chassiscisco:crs-1_8-slot_single-shelf_systemcisco:crs-1_fabric_card_chassiscisco:crs-1_line_card_chassis_\(dual\)cisco:crs-1_line_card_chassis_\(multi\)cisco:crs-1_multishelf_systemcisco:crs-3_16-slot_single-shelf_systemcisco:crs-3_4-slot_single-shelf_systemcisco:crs-3_8-slot_single-shelf_systemcisco:crs-3_multishelf_systemcisco:crs-8\/s-b_crscisco:crs-8\/scrscisco:crs-xcisco:crs-x_16-slot_single-shelf_systemcisco:crs-x_multishelf_systemcisco:crs_performance_route_processorcisco:ios_xrcisco:ncs_5001cisco:ncs_5002cisco:ncs_5011cisco:ncs_520cisco:ncs_540cisco:ncs_5501cisco:ncs_5502cisco:ncs_5508cisco:ncs_5516cisco:ncs_560cisco:ncs_6008

Weaknesses (CWE)

CWE-400CWE-770

References

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

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-dvmrp-memexh-dSmpdvfz(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3569(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.