Description
A vulnerability in the Common Open Policy Service (COPS) of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause resource exhaustion, resulting in a denial of service (DoS) condition. This vulnerability is due to a deadlock condition in the code when processing COPS packets under certain conditions. An attacker could exploit this vulnerability by sending COPS packets with high burst rates to an affected device. A successful exploit could allow the attacker to cause the CPU to consume excessive resources, which prevents other control plane processes from obtaining resources and results in a DoS.
Published: 2021-09-23
Score: 8.6 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-7089 A vulnerability in the Common Open Policy Service (COPS) of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause resource exhaustion, resulting in a denial of service (DoS) condition. This vulnerability is due to a deadlock condition in the code when processing COPS packets under certain conditions. An attacker could exploit this vulnerability by sending COPS packets with high burst rates to an affected device. A successful exploit could allow the attacker to cause the CPU to consume excessive resources, which prevents other control plane processes from obtaining resources and results in a DoS.
History

Thu, 07 Nov 2024 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Cisco 7600 Router Asr 901-12c-f-d Asr 901-12c-ft-d Asr 901-4c-f-d Asr 901-4c-ft-d Asr 901-6cz-f-a Asr 901-6cz-f-d Asr 901-6cz-fs-a Asr 901-6cz-fs-d Asr 901-6cz-ft-a Asr 901-6cz-ft-d Cbr-8 Ios Xe
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-07T21:59:58.428Z

Reserved: 2020-11-13T00:00:00.000Z

Link: CVE-2021-1622

cve-icon Vulnrichment

Updated: 2024-08-03T16:18:10.416Z

cve-icon NVD

Status : Modified

Published: 2021-09-23T03:15:13.353

Modified: 2024-11-21T05:44:45.800

Link: CVE-2021-1622

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses