Cisco Security Advisory
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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
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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.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-apidos-PGsDcdNF
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Vulnerable Products
This vulnerability affects the following Cisco products independent of device configuration:
- Emergency Responder (CSCwf62074)
- Prime Collaboration Deployment (CSCwf62080)
- Unified Communications Manager (Unified CM) (CSCwf44755)
- Unified Communications Manager IM & Presence Service (Unified CM IM&P) (CSCwf62094)
- Unified Communications Manager Session Management Edition (Unified CM SME) (CSCwf44755)
- Unity Connection (CSCwf62081)
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
- Finesse
- Hosted Collaboration Mediation Fulfillment (HCM-F)
- Packaged Contact Center Enterprise (Packaged CCE)
- Prime License Manager (PLM)
- Remote Expert Mobile
- SocialMiner
- Unified Contact Center Domain Manager (Unified CCDM)
- Unified Contact Center Express (Unified CCX)
- Unified Contact Center Management Portal (Unified CCMP)
- Unified Customer Voice Portal (CVP)
- Unified Intelligence Center
- Virtualized Voice Browser (VVB)
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There are no workarounds that address this vulnerability.
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Cisco has released free software updates that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.
Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.htmlAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
The Cisco Support and Downloads page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Fixed Releases
Customers are advised to upgrade to an appropriate fixed software release as indicated in the following tables:
Emergency Responder: CSCwf62074
Cisco Emergency Responder Release First Vulnerable Release First Fixed Release 11.5(1) and earlier Not vulnerable Not vulnerable 12.5(1) Not vulnerable Not vulnerable 14 14SU3 ciscocm.cer_V14SU3_CSCwf62074.cop.sha512 Prime Collaboration Deployment: CSCwf62080
Cisco Prime Collaboration Deployment Release First Vulnerable Release First Fixed Release 11.5(1) and earlier Not vulnerable Not vulnerable 12.5(1) Not vulnerable Not vulnerable 14 14SU3 ciscocm.V14SU3_pcd_CSCwf62080.k4.cop.sha512 Unified CM Unified and CM SME: CSCwf44755
Cisco Unified CM and Unified CM SME Release First Vulnerable Release First Fixed Release 11.5(1) and earlier Not vulnerable Not vulnerable 12.5(1) 12.5(1)SU7 12.5(1)SU8 14 14SU3 ciscocm.V14SU3_CSCwf44755.cop.sha512 Unified CM IM&P: CSCwf62094
Cisco Unified CM IM&P Release First Vulnerable Release First Fixed Release 11.5(1) and earlier Not vulnerable Not vulnerable 12.5(1) 12.5(1)SU7 12.5(1)SU8 14 14SU3 ciscocm.cup_CSCwf62094_14SU3.cop.sha512 Unity Connection: CSCwf62081
Cisco Unity Connection Release First Vulnerable Release First Fixed Release 11.5(1) and earlier Not vulnerable Not vulnerable 12.5(1) Not vulnerable Not vulnerable 14 14SU3 ciscocm.cuc.V14SU3_CSCwf62081.k4.cop.sha512 The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.
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The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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This vulnerability was found during internal security testing.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial public release. — Final 2023-OCT-04
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