description: A vulnerability in the XCP Authentication Service of the Cisco Unified Communications Manager IM &amp; Presence Service (Unified CM IM&amp;P) could allow an unauthenticated, remote attacker to cause a temporary service outage for all Cisco Unified CM IM&amp;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&amp;P users who were authenticated prior to an attack.
problem types: Uncontrolled Memory Allocation
affected:
{
vendor: Cisco
product: Cisco Unified Communications Manager IM and Presence Service
versions:
version: 10.5(1), status: affected
version: 10.5(2), status: affected
version: 10.5(2a), status: affected
version: 10.5(2b), status: affected
version: 10.5(2)SU3, status: affected
version: 10.5(2)SU2a, status: affected
version: 10.5(2)SU4a, status: affected
version: 10.5(2)SU4, status: affected
version: 10.5(1)SU3, status: affected
version: 10.5(1)SU1, status: affected
version: 10.5(2)SU1, status: affected
version: 10.5(2)SU2, status: affected
version: 10.5(1)SU2, status: affected
version: 11.5(1), status: affected
version: 11.5(1)SU1, status: affected
version: 11.5(1)SU2, status: affected
version: 11.5(1)SU3, status: affected
version: 11.5(1)SU3a, status: affected
version: 11.5(1)SU4, status: affected
version: 11.5(1)SU5, status: affected
version: 11.5(1)SU5a, status: affected
version: 11.5(1)SU6, status: affected
version: 11.5(1)SU7, status: affected
version: 11.5(1)SU8, status: affected
version: 11.5(1)SU9, status: affected
version: 11.5(1)SU10, status: affected
version: 11.5(1)SU11, status: affected
version: 11.0(1), status: affected
version: 11.0(1)SU1, status: affected
version: 12.5(1), status: affected
version: 12.5(1)SU1, status: affected
version: 12.5(1)SU2, status: affected
version: 12.5(1)SU3, status: affected
version: 12.5(1)SU4, status: affected
version: 12.5(1)SU5, status: affected
version: 12.5(1)SU6, status: affected
version: 14, status: affected
version: 14SU1, status: affected
version: 14SU2, status: affected
version: 14SU2a, status: affected
version: 10.0(1), status: affected
version: 10.0(1)SU1, status: affected
version: 10.0(1)SU2, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
baseScore: 7.5
baseSeverity: HIGH
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
]
exploits: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.