Cisco Prime Central for Hosted Collaboration Solution Assurance contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
Description
Cisco Prime Central for Hosted Collaboration Solution (HCS) Assurance contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
The vulnerability is due to the improper processing of malformed Transport Layer Security (TLS) messages received via TCP port 9043 or TCP port 9443 by the vulnerable system. If successful, the attacker could consume all available CPU cycles and interrupt the monitoring of voice services, resulting in a DoS condition.
Cisco has confirmed this vulnerability and software updates are available.
Warning Indicators
Cisco Prime Central for HCS Assurance versions 8.6 and 9.0 are vulnerable.
IntelliShield Analysis
To exploit the vulnerability, an attacker would likely need access to an internal, trusted network to send malformed TLS messages to the targeted system, decreasing the likelihood of a successful exploit.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
An unauthenticated, remote attacker could exploit this vulnerability by consuming all available CPU cycles, which could cause an interruption of the monitoring of voice services and result in a DoS condition on a targeted system.
Technical Information
The vulnerability is due to the improper processing of malformed TLS messages received by the affected system.
An unauthenticated, remote attacker could exploit this vulnerability by sending malformed TLS messages via TCP port 9043 or TCP port 9443 to a targeted device. Successful exploitation of the vulnerability could allow the attacker to consume all available CPU cycles and interrupt the monitoring of voice services, resulting in a DoS condition.
Safeguards
Administrators are advised to apply the appropriate updates.
Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at tac@cisco.com for assistance.
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco
Cisco Hosted Collaboration Solution
8.6(2) Base | 8.6(x) Base | 9.0(1) Base | 9.0(x) Base
Associated Products:
N/A
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