Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | < 16.12.1z1 |
| Cisco | 7600 Router | - |
| Cisco | Asr 901-12C-F-D | - |
| Cisco | Asr 901-12C-Ft-D | - |
| Cisco | Asr 901-4C-F-D | - |
| Cisco | Asr 901-4C-Ft-D | - |
| Cisco | Asr 901-6Cz-F-A | - |
| Cisco | Asr 901-6Cz-F-D | - |
| Cisco | Asr 901-6Cz-Fs-A | - |
| Cisco | Asr 901-6Cz-Fs-D | - |
| Cisco | Asr 901-6Cz-Ft-A | - |
| Cisco | Asr 901-6Cz-Ft-D | - |
| Cisco | Cbr-8 | - |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cPatchVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cPatchVendor Advisory
FAQ
What is CVE-2021-1622?
CVE-2021-1622 is a vulnerability with a CVSS score of 8.6 (HIGH). 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 exhausti...
How severe is CVE-2021-1622?
CVE-2021-1622 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-1622?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco 7600 Router, Cisco Asr 901-12C-F-D, Cisco Asr 901-12C-Ft-D, Cisco Asr 901-4C-F-D.