description: A vulnerability in an API endpoint of multiple Cisco Unified Communications Products could allow an unauthenticated, remote attacker to cause high CPU utilization, which could impact access to the web-based management interface and cause delays with call processing. This API is not used for device management and is unlikely to be used in normal operations of the device.
This vulnerability is due to improper API authentication and incomplete validation of the API request. An attacker could exploit this vulnerability by sending a crafted HTTP request to a specific API on the device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition due to high CPU utilization, which could negatively impact user traffic and management access. When the attack stops, the device will recover without manual intervention.
problem types: Uncontrolled Resource Consumption
affected:
{
vendor: Cisco
product: Cisco Emergency Responder
versions:
version: 12.5(1)SU7, status: affected
version: 14, status: affected
version: 14SU3, status: affected
}
{
vendor: Cisco
product: Cisco Unity Connection
versions:
version: 14SU3, status: affected
}
{
vendor: Cisco
product: Cisco Unified Communications Manager
versions:
version: 12.5(1)SU7, status: affected
version: 12.5(1)SU7a, status: affected
version: 14SU3, status: affected
}
{
vendor: Cisco
product: Cisco Unified Communications Manager IM and Presence Service
versions:
version: 12.5(1)SU7, status: affected
version: 14SU3, status: affected
}
{
vendor: Cisco
product: Cisco Prime Collaboration Deployment
versions:
version: 14SU3, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
baseScore: 8.6
baseSeverity: HIGH
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
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.