CVE-2021-1622

Опубликовано: 23 сент. 2021

Источник: nvd

CVSS3: 8.6

CVSS2: 4.3

EPSS Низкий

Описание

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.

Ссылки

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cbr8-cops-Vc2ZsJSx
Patch
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cbr8-cops-Vc2ZsJSx
Patch
Vendor Advisory

Уязвимые конфигурации

Конфигурация 1

Одновременно

Одно из

cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*

Версия до 16.12.1z1 (исключая)

cpe:2.3:o:cisco:ios_xe:17.3.1x:*:*:*:*:*:*:*

Одно из

cpe:2.3:h:cisco:7600_router:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-12c-f-d:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-12c-ft-d:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-4c-f-d:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-4c-ft-d:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-6cz-f-a:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-6cz-f-d:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-6cz-fs-a:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-6cz-fs-d:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-6cz-ft-a:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:asr_901-6cz-ft-d:-:*:*:*:*:*:*:*

cpe:2.3:h:cisco:cbr-8:-:*:*:*:*:*:*:*

EPSS

Процентиль: 50%

0.00266

Низкий

8.6 High

CVSS3

4.3 Medium

CVSS2

Дефекты

CWE-833

CWE-667

Связанные уязвимости

GHSA-6767-7pjf-mxgf

github

больше 3 лет назад

BDU:2021-05976