Vulnerability Monitor

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CVE-2020-3508

A vulnerability in the IP Address Resolution Protocol (ARP) feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers with a 20-Gbps Embedded Services Processor (ESP) installed could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service condition. The vulnerability is due to insufficient error handling when an affected device has reached platform limitations. An attacker could exploit this vulnerability by sending a malicious series of IP ARP messages to an affected device. A successful exploit could allow the attacker to exhaust system resources, which would eventually cause the affected device to reload.

Published

2020-09-24T18:15:20.963

Last Modified

2024-11-21T05:31:12.983

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.4 (HIGH)

CVSSv2 Vector

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

Access Vector: ADJACENT_NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

6.5

Impact Score

6.9

Weaknesses

Type: Secondary
CWE-400
Type: Primary
CWE-400

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios_xe	16.3.1	Yes
Operating System	cisco	ios_xe	16.6.5	Yes
Operating System	cisco	ios_xe	16.7\(1\)	Yes
Operating System	cisco	ios_xe	17.1.1	Yes
Hardware	cisco	1000v	-	No
Hardware	cisco	4321_integrated_services_router	-	No
Hardware	cisco	4331_integrated_services_router	-	No
Hardware	cisco	4351_integrated_services_router	-	No
Hardware	cisco	4431_integrated_services_router	-	No
Hardware	cisco	asr_1000	-	No
Hardware	cisco	asr_1001-hx	-	No
Hardware	cisco	asr_1001-x	-	No
Hardware	cisco	asr_1002-hx	-	No
Hardware	cisco	asr_1002-x	-	No
Hardware	cisco	catalyst_3650-12x48fd-e	-	No
Hardware	cisco	catalyst_3650-12x48fd-l	-	No
Hardware	cisco	catalyst_3650-12x48fd-s	-	No
Hardware	cisco	catalyst_3650-24pd-e	-	No
Hardware	cisco	catalyst_3650-24pd-l	-	No
Hardware	cisco	catalyst_3650-24pd-s	-	No
Hardware	cisco	catalyst_3650-24pdm-e	-	No
Hardware	cisco	catalyst_3650-24pdm-l	-	No
Hardware	cisco	catalyst_3650-24pdm-s	-	No
Hardware	cisco	catalyst_3650-24ps-e	-	No
Hardware	cisco	catalyst_3650-24ps-l	-	No
Hardware	cisco	catalyst_3650-24ps-s	-	No
Hardware	cisco	catalyst_3650-24td-e	-	No
Hardware	cisco	catalyst_3650-24td-l	-	No
Hardware	cisco	catalyst_3650-24td-s	-	No
Hardware	cisco	catalyst_3650-24ts-e	-	No
Hardware	cisco	catalyst_3650-24ts-l	-	No
Hardware	cisco	catalyst_3650-24ts-s	-	No
Hardware	cisco	catalyst_3650-48fd-e	-	No
Hardware	cisco	catalyst_3650-48fd-l	-	No
Hardware	cisco	catalyst_3650-48fd-s	-	No
Hardware	cisco	catalyst_3650-48fq-e	-	No
Hardware	cisco	catalyst_3650-48fq-l	-	No
Hardware	cisco	catalyst_3650-48fq-s	-	No
Hardware	cisco	catalyst_3650-48fqm-e	-	No
Hardware	cisco	catalyst_3650-48fqm-l	-	No
Hardware	cisco	catalyst_3650-48fqm-s	-	No
Hardware	cisco	catalyst_3650-48fs-e	-	No
Hardware	cisco	catalyst_3650-48fs-l	-	No
Hardware	cisco	catalyst_3650-48fs-s	-	No
Hardware	cisco	catalyst_3650-48pd-e	-	No
Hardware	cisco	catalyst_3650-48pd-l	-	No
Hardware	cisco	catalyst_3650-48pd-s	-	No
Hardware	cisco	catalyst_3650-48pq-e	-	No
Hardware	cisco	catalyst_3650-48pq-l	-	No
Hardware	cisco	catalyst_3650-48pq-s	-	No
Hardware	cisco	catalyst_3650-48ps-e	-	No
Hardware	cisco	catalyst_3650-48ps-l	-	No
Hardware	cisco	catalyst_3650-48ps-s	-	No
Hardware	cisco	catalyst_3650-48td-e	-	No
Hardware	cisco	catalyst_3650-48td-l	-	No
Hardware	cisco	catalyst_3650-48td-s	-	No
Hardware	cisco	catalyst_3650-48tq-e	-	No
Hardware	cisco	catalyst_3650-48tq-l	-	No
Hardware	cisco	catalyst_3650-48tq-s	-	No
Hardware	cisco	catalyst_3650-48ts-e	-	No
Hardware	cisco	catalyst_3650-48ts-l	-	No
Hardware	cisco	catalyst_3650-48ts-s	-	No
Hardware	cisco	catalyst_3650-8x24pd-e	-	No
Hardware	cisco	catalyst_3650-8x24pd-l	-	No
Hardware	cisco	catalyst_3650-8x24pd-s	-	No
Hardware	cisco	catalyst_3850-12s-e	-	No
Hardware	cisco	catalyst_3850-12s-s	-	No
Hardware	cisco	catalyst_3850-12xs-e	-	No
Hardware	cisco	catalyst_3850-12xs-s	-	No
Hardware	cisco	catalyst_3850-16xs-e	-	No
Hardware	cisco	catalyst_3850-16xs-s	-	No
Hardware	cisco	catalyst_3850-24p-e	-	No
Hardware	cisco	catalyst_3850-24p-l	-	No
Hardware	cisco	catalyst_3850-24p-s	-	No
Hardware	cisco	catalyst_3850-24s-e	-	No
Hardware	cisco	catalyst_3850-24s-s	-	No
Hardware	cisco	catalyst_3850-24t-e	-	No
Hardware	cisco	catalyst_3850-24t-l	-	No
Hardware	cisco	catalyst_3850-24t-s	-	No
Hardware	cisco	catalyst_3850-24u-e	-	No
Hardware	cisco	catalyst_3850-24u-l	-	No
Hardware	cisco	catalyst_3850-24u-s	-	No
Hardware	cisco	catalyst_3850-24xs-e	-	No
Hardware	cisco	catalyst_3850-24xs-s	-	No
Hardware	cisco	catalyst_3850-24xu-e	-	No
Hardware	cisco	catalyst_3850-24xu-l	-	No
Hardware	cisco	catalyst_3850-24xu-s	-	No
Hardware	cisco	catalyst_3850-32xs-e	-	No
Hardware	cisco	catalyst_3850-32xs-s	-	No
Hardware	cisco	catalyst_3850-48f-e	-	No
Hardware	cisco	catalyst_3850-48f-l	-	No
Hardware	cisco	catalyst_3850-48f-s	-	No
Hardware	cisco	catalyst_3850-48p-e	-	No
Hardware	cisco	catalyst_3850-48p-l	-	No
Hardware	cisco	catalyst_3850-48p-s	-	No
Hardware	cisco	catalyst_3850-48t-e	-	No
Hardware	cisco	catalyst_3850-48t-l	-	No
Hardware	cisco	catalyst_3850-48t-s	-	No
Hardware	cisco	catalyst_3850-48u-e	-	No
Hardware	cisco	catalyst_3850-48u-l	-	No
Hardware	cisco	catalyst_3850-48u-s	-	No
Hardware	cisco	catalyst_3850-48xs-e	-	No
Hardware	cisco	catalyst_3850-48xs-f-e	-	No
Hardware	cisco	catalyst_3850-48xs-f-s	-	No
Hardware	cisco	catalyst_3850-48xs-s	-	No
Hardware	cisco	catalyst_c3850-12x48u-e	-	No
Hardware	cisco	catalyst_c3850-12x48u-l	-	No
Hardware	cisco	catalyst_c3850-12x48u-s	-	No
Operating System	cisco	ios_xe	16.9.1	Yes
Operating System	cisco	ios_xe	17.4.1	Yes
Hardware	cisco	1100-4g_integrated_services_router	-	No
Hardware	cisco	1100-4gltegb_integrated_services_router	-	No
Hardware	cisco	1100-4gltena_integrated_services_router	-	No
Hardware	cisco	1100-4p_integrated_services_router	-	No
Hardware	cisco	1100-6g_integrated_services_router	-	No
Hardware	cisco	1100-8p_integrated_services_router	-	No
Hardware	cisco	1100-lte_integrated_services_router	-	No
Hardware	cisco	1100_integrated_services_router	-	No
Hardware	cisco	1101-4p_integrated_services_router	-	No
Hardware	cisco	1101_integrated_services_router	-	No
Hardware	cisco	1109-2p_integrated_services_router	-	No
Hardware	cisco	1109-4p_integrated_services_router	-	No
Hardware	cisco	1109_integrated_services_router	-	No
Hardware	cisco	1111x-8p_integrated_services_router	-	No
Hardware	cisco	1111x_integrated_services_router	-	No
Hardware	cisco	111x_integrated_services_router	-	No
Hardware	cisco	1120_integrated_services_router	-	No
Hardware	cisco	1160_integrated_services_router	-	No
Hardware	cisco	4321\/k9-rf_integrated_services_router	-	No
Hardware	cisco	4321\/k9-ws_integrated_services_router	-	No
Hardware	cisco	4321\/k9_integrated_services_router	-	No
Hardware	cisco	4331\/k9-rf_integrated_services_router	-	No
Hardware	cisco	4331\/k9-ws_integrated_services_router	-	No
Hardware	cisco	4331\/k9_integrated_services_router	-	No
Hardware	cisco	4351\/k9-rf_integrated_services_router	-	No
Hardware	cisco	4351\/k9-ws_integrated_services_router	-	No
Hardware	cisco	4351\/k9_integrated_services_router	-	No
Hardware	cisco	4431_integrated_services_router	-	No
Hardware	cisco	4461_integrated_services_router	-	No
Hardware	cisco	asr_1000-x	-	No
Hardware	cisco	asr_1001	-	No
Hardware	cisco	asr_1001-x	-	No
Hardware	cisco	asr_1002	-	No
Hardware	cisco	asr_1002-x	-	No
Hardware	cisco	asr_1004	-	No
Hardware	cisco	asr_1006	-	No
Hardware	cisco	asr_1013	-	No
Hardware	cisco	asr_1023	-	No
Hardware	cisco	csr1000v	-	No

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esp20-arp-dos-GvHVggqJ Vendor Advisory ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esp20-arp-dos-GvHVggqJ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)