CVE-2020-3566

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.

CVSS v3 8.6 HIGH
CVSS v2.0 7.8 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

7.8^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 10.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

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

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:asr_9001:-:::::::*
	cpe:2.3:h:cisco:asr_9006:-:::::::*
	cpe:2.3:h:cisco:asr_9010:-:::::::*
	cpe:2.3:h:cisco:asr_9901:-:::::::*
	cpe:2.3:h:cisco:asr_9904:-:::::::*
	cpe:2.3:h:cisco:asr_9906:-:::::::*
	cpe:2.3:h:cisco:asr_9910:-:::::::*
	cpe:2.3:h:cisco:asr_9912:-:::::::*
	cpe:2.3:h:cisco:asr_9922:-:::::::*

History

26 Jul 2024, 19:55

Type	Values Removed	Values Added
CVSS	v2 : ~~7.8~~ v3 : ~~7.5~~	v2 : 7.8 v3 : 8.6

Information

Published : 2020-08-29 16:15

Updated : 2024-07-26 19:55

NVD link : CVE-2020-3566

Mitre link : CVE-2020-3566

CVE.ORG link : CVE-2020-3566

JSON object : View

Products Affected

cisco

asr_9901
asr_9912
ios_xr
asr_9006
asr_9904
asr_9001
asr_9906
asr_9010
asr_9910
asr_9922

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

CWE-400

Uncontrolled Resource Consumption

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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."}, {"lang": "es", "value": "Una vulnerabilidad en la funcionalidad del Distance Vector Multicast Routing Protocol (DVMRP) de Cisco IOS XR Software, podr\u00eda permitir a un atacante remoto no autenticado agotar la memoria de proceso de un dispositivo afectado. La vulnerabilidad es debido a una gesti\u00f3n de cola insuficiente para los paquetes Internet Group Management Protocol (IGMP). Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de tr\u00e1fico IGMP dise\u00f1ado hacia un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir a un atacante agotar la memoria, resultando en una inestabilidad de otros procesos. Estos procesos pueden incluir, pero no se limitan a, protocolos de enrutamiento interior y exterior. Cisco lanzar\u00e1 actualizaciones de software que abordan esta vulnerabilidad"}], "lastModified": "2024-07-26T19:55:20.327", "cisaActionDue": "2022-05-03", "cisaExploitAdd": "2021-11-03", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:cisco:ios_xr:6.4.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E67F538A-3E1A-4749-BB8D-4F8043653B6E"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "324C97E6-1810-404F-9F45-6240F99FF039"}, {"criteria": "cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "57EB55BB-41B7-40A1-B6F5-142FE8AB4C16"}, {"criteria": "cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "433F4A82-04A4-4EAA-8C19-F7581DCD8D29"}, {"criteria": "cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2D5E60AB-94FF-448A-89D8-5D2197E21C74"}, {"criteria": "cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A93212A4-50AB-42E7-89A4-5FBBAEA050C3"}, {"criteria": "cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "EDA53A61-98B3-458C-8893-61CD7D6B1E48"}, {"criteria": "cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "F396564E-B477-4A27-A189-CEB737552E25"}, {"criteria": "cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "5445CC54-ACFB-4070-AF26-F91FEAA85181"}, {"criteria": "cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "D7AA58E5-D7E1-48CF-93FF-C60EB85B2BC7"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ykramarz@cisco.com", "cisaRequiredAction": "Apply updates per vendor instructions.", "cisaVulnerabilityName": "Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability"}