CVE-2020-3569 : Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMR

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.

Published 2020-09-23 01:15:16

Updated 2024-07-25 17:21:09

Source Cisco Systems, Inc.

View at NVD, CVE.org

Products affected by CVE-2020-3569

Cisco » Ios Xr
Versions before (<) 6.5.2
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 6.1.4
cpe:2.3:o:cisco:ios_xr:6.1.4:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 6.2.3
cpe:2.3:o:cisco:ios_xr:6.2.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 6.6.2
cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 6.5.3
cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 6.4.2
cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 7.0.2
cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 7.1.15
cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 6.3.3
cpe:2.3:o:cisco:ios_xr:6.3.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 6.4.3
cpe:2.3:o:cisco:ios_xr:6.4.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » CRS » Version: N/A
When used together with: Cisco » Crs-1 16-slot Line Card Chassis » Version: N/A
When used together with: Cisco » Crs-1 16-slot Single-shelf System » Version: N/A
When used together with: Cisco » Crs-1 4-slot Single-shelf System » Version: N/A
When used together with: Cisco » Crs-1 8-slot Line Card Chassis » Version: N/A
When used together with: Cisco » Crs-1 8-slot Single-shelf System » Version: N/A
When used together with: Cisco » Crs-1 Fabric Card Chassis » Version: N/A
When used together with: Cisco » Crs-1 Line Card Chassis (dual) » Version: N/A
When used together with: Cisco » Crs-1 Line Card Chassis (multi) » Version: N/A
When used together with: Cisco » Crs-1 Multishelf System » Version: N/A
When used together with: Cisco » Crs-3 16-slot Single-shelf System » Version: N/A
When used together with: Cisco » Crs-3 4-slot Single-shelf System » Version: N/A
When used together with: Cisco » Crs-3 8-slot Single-shelf System » Version: N/A
When used together with: Cisco » Crs-3 Multishelf System » Version: N/A
When used together with: Cisco » Crs-8/s-b Crs » Version: N/A
When used together with: Cisco » Crs-8/scrs » Version: N/A
When used together with: Cisco » Crs-x » Version: N/A
When used together with: Cisco » Crs-x 16-slot Single-shelf System » Version: N/A
When used together with: Cisco » Crs-x Multishelf System » Version: N/A
When used together with: Cisco » Crs Performance Route Processor » Version: N/A
Cisco » Ios Xr » Version: 6.6.3
cpe:2.3:o:cisco:ios_xr:6.6.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A
Cisco » Ios Xr » Version: 7.1.2
cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Asr 9000v » Version: N/A
When used together with: Cisco » Asr 9001 » Version: N/A
When used together with: Cisco » Asr 9006 » Version: N/A
When used together with: Cisco » Asr 9010 » Version: N/A
When used together with: Cisco » Asr 9901 » Version: N/A
When used together with: Cisco » Asr 9903 » Version: N/A
When used together with: Cisco » Asr 9904 » Version: N/A
When used together with: Cisco » Asr 9906 » Version: N/A
When used together with: Cisco » Asr 9910 » Version: N/A
When used together with: Cisco » Asr 9912 » Version: N/A
When used together with: Cisco » Asr 9922 » Version: N/A
When used together with: Cisco » Ncs 5001 » Version: N/A
When used together with: Cisco » Ncs 5002 » Version: N/A
When used together with: Cisco » Ncs 5011 » Version: N/A
When used together with: Cisco » Ncs 520 » Version: N/A
When used together with: Cisco » Ncs 540 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: N/A
When used together with: Cisco » Ncs 5501 » Version: SE
When used together with: Cisco » Ncs 5502 » Version: N/A
When used together with: Cisco » Ncs 5502 » Version: SE
When used together with: Cisco » Ncs 5508 » Version: N/A
When used together with: Cisco » Ncs 5516 » Version: N/A
When used together with: Cisco » Ncs 560 » Version: N/A
When used together with: Cisco » Ncs 6008 » Version: N/A

CVE-2020-3569 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA 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.

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2020-3569

Added on 2021-11-03 Action due date 2022-05-03

Exploit prediction scoring system (EPSS) score for CVE-2020-3569

EPSS FAQ

0.37%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 73 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-3569

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
8.6	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High
8.6	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	NIST	2024-07-25
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High
8.6	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	Cisco Systems, Inc.	2024-07-25
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2020-3569

CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

Assigned by: ykramarz@cisco.com (Secondary)
CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-3569

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

Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability
Vendor Advisory

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