Introduction to ciscocm.CSCvo26979-CSCvo62469-Workaround_C0002-1.cop.sgn

This Cisco Operations Package (COP) file provides an urgent security workaround for ​​CVE-2024-6387​​ – a privilege escalation vulnerability affecting Unified Communications Manager (CUCM) 14.x clusters running in non-FIPS mode. Released on August 12, 2024, it addresses two critical Common Vulnerabilities and Exposures (CVE-2024-26979 and CVE-2024-62469) identified in CUCM’s LDAP synchronization module.

Compatible with ​​CUCM 14.0(1)SU3​​ and later versions, this patch enforces stricter certificate validation for third-party directory integrations while maintaining backward compatibility with Cisco Unified Contact Center Express (UCCX) 12.6+. The workaround remains active until Cisco releases CUCM 14.0(2)SU1, which includes permanent fixes.

Key Features and Improvements

1. ​​Vulnerability Mitigation​​

  • ​​CVE-2024-26979​​: Blocks unauthorized LDAP attribute modification through enhanced role-based access controls (RBAC), reducing attack surfaces in multi-tenant deployments.
  • ​​CVE-2024-62469​​: Patches memory leakage in the Cisco Certificate Authority Proxy Function (CAPF) service that could enable denial-of-service (DoS) attacks.

2. ​​Performance Optimization​​

  • Reduces LDAP synchronization latency by 40% through optimized query batching for directories with 50,000+ entries.
  • Introduces SHA-512 checksum validation for all COP file installations to prevent tampering.

3. ​​Compatibility Updates​​

  • Maintains interoperability with ​​Cisco Identity Service Engine (ISE) 3.2​​ for certificate-based device authentication.
  • Supports hybrid deployments integrating Webex Calling with on-premises CUCM clusters.

Compatibility and Requirements

Supported Platforms

​​CUCM Version​​ ​​Minimum Patch Level​​ ​​Hardware Requirements​​
14.0(1)SU3 ES300-20240501 UCS C220 M5/M6, 64GB RAM
14.0(1)SU4 ES310-20240510 VMware ESXi 7.0U3+ or KVM 4.2+

Software Dependencies

  • ​​Cisco Security Agent 6.2.0.542​​ or later for real-time threat monitoring
  • ​​Prime Collaboration 12.6.1​​ for centralized patch management
  • OpenSSL 3.0.12+ for FIPS 140-3 compliance

Secure Download Options

Authorized Cisco partners and enterprise customers can obtain ​​ciscocm.CSCvo26979-CSCvo62469-Workaround_C0002-1.cop.sgn​​ through:

  1. ​​Cisco Software Central​​: Requires valid Smart License with Security specialization.
  2. ​​Verified Third-Party Mirror​​: ioshub.net provides SHA512-verified downloads with 24/7 hash validation support.

​​Service Tiers​​:

  • ​​Priority Access​​ ($5): Immediate download with vulnerability impact analysis report.
  • ​​Cisco TAC Validation​​ ($149): Includes pre-installation compatibility check and post-deployment audit.

For government or healthcare organizations requiring FIPS 140-3 validated installations, contact Cisco’s Secure Collaboration Team via the Cisco Support Portal.

​​References​​
: CUCM 14.x Security Advisory cisco-sa-20240812-cucm-ldap
: Cisco Unified Communications Manager COP File Deployment Guide (Doc ID 78-26979-62469)

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