CVE-2023-20108 - CVE House
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Status published High CVE-2023-20108

A vulnerability in the XCP Authentication Service of the Cisco...

Vulnerability Description

A vulnerability in the XCP Authentication Service of the Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P) could allow an unauthenticated, remote attacker to cause a temporary service outage for all Cisco Unified CM IM&P users who are attempting to authenticate to the service, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted login message to the affected device. A successful exploit could allow the attacker to cause an unexpected restart of the authentication service, preventing new users from successfully authenticating. Exploitation of this vulnerability does not impact Cisco Unified CM IM&P users who were authenticated prior to an attack.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Cisco Unified Communications Manager IM and Presence Service
Vulnerable Versions:
10.5(1), 10.5(2), 10.5(2a), 10.5(2b), 10.5(2)SU3, 10.5(2)SU2a, 10.5(2)SU4a, 10.5(2)SU4, 10.5(1)SU3, 10.5(1)SU1, 10.5(2)SU1, 10.5(2)SU2, 10.5(1)SU2, 11.5(1), 11.5(1)SU1, 11.5(1)SU2, 11.5(1)SU3, 11.5(1)SU3a, 11.5(1)SU4, 11.5(1)SU5, 11.5(1)SU5a, 11.5(1)SU6, 11.5(1)SU7, 11.5(1)SU8, 11.5(1)SU9, 11.5(1)SU10, 11.5(1)SU11, 11.0(1), 11.0(1)SU1, 12.5(1), 12.5(1)SU1, 12.5(1)SU2, 12.5(1)SU3, 12.5(1)SU4, 12.5(1)SU5, 12.5(1)SU6, 14, 14SU1, 14SU2, 14SU2a, 10.0(1), 10.0(1)SU1, 10.0(1)SU2

Timeline

Official Publish: June 28th, 2023
Last Modified: August 2nd, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-789

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.