PT-2020-2682 · Cisco · Cisco Unified Contact Center Express

Published 2020-06-03 · Updated 2020-06-12 · CVE-2020-3267

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Unified Contact Center Express (affected versions not specified)

Description The issue is related to insufficient authorization enforcement in the API subsystem, allowing an authenticated, remote attacker to change the availability state of any agent. This could be achieved by authenticating to the system with valid agent credentials and performing a specific API call with crafted input, potentially causing a denial of service condition.

Recommendations For all affected versions, consider restricting access to the API subsystem until a fix is available. As a temporary workaround, limit the ability of agents to change their availability state through the API to minimize the risk of exploitation. Avoid using crafted input in API calls to prevent potential denial of service conditions. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Authorization

Files Accessible to External Parties

Weakness Enumeration

CWE-285

CWE-552

Related Identifiers

BDU:2020-02749

CVE-2020-3267

Affected Products

Cisco Unified Contact Center Express

References · 4

• https://osv.dev/vulnerability/CVE-2020-3267 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-uccx-api-auth-WSx4v7sB · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02749 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-3267 · Security Note