PT-2020-4428 · Cisco · Cisco Ios Xe

Published 2020-09-24 · Updated 2021-10-19 · CVE-2020-3526

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Cisco IOS XE Software on Cisco cBR-8 Converged Broadband Routers (affected versions not specified)

Description: A vulnerability in the Common Open Policy Service (COPS) engine could allow an unauthenticated, remote attacker to crash a device. The issue is due to insufficient input validation. An attacker could exploit this by sending a malformed COPS message to the device, potentially crashing it.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-04957

CVE-2020-3526

Affected Products

Cisco Ios Xe

References · 6

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-COPS-VLD-MpbTvGEW · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-COPS-VLD-MpbTvGEW · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04957 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/657130 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-3526 · Security Note
• https://osv.dev/vulnerability/CVE-2020-3526 · Vendor Advisory