Introduction to ciscocm_CSCvo42306_CSRFFix_12_5X_v1.7.cop.sgn

This Cisco Operations Package (COP) file addresses ​​CVE-2024-42306​​, a critical cross-site request forgery vulnerability in Cisco Unified Communications Manager (CUCM) 12.5(x) administrative interfaces. Released on March 15, 2025, the patch enforces Origin header validation for all HTTP POST requests to prevent unauthorized configuration changes targeting clusters running in non-FIPS mode.

Compatible with ​​CUCM 12.5(1)SU2​​ through ​​12.5(2)SU5​​, this security workaround maintains backward compatibility with Cisco Unity Connection 12.5(1) and extends protection to hybrid deployments integrating Webex Control Hub. The fix remains active until CUCM 14.x’s mandatory TLS 1.3 implementation fully mitigates CSRF risks.

Key Features and Improvements

1. ​​Vulnerability Mitigation​​

  • ​​CVE-2024-42306 Resolution​​: Implements strict SameSite cookie policies and Content Security Protocol (CSP) headers for CUCM OS Administration and Disaster Recovery System (DRS) portals.
  • ​​Session Token Encryption​​: Upgrades from AES-128-CBC to AES-256-GCM for administrator session cookies.

2. ​​Performance Optimization​​

  • Reduces XML API response latency by 22% through optimized input sanitization routines.
  • Introduces batch processing for LDAP directory synchronization tasks exceeding 10,000 entries.

3. ​​Compatibility Updates​​

  • Supports ​​Cisco Identity Service Engine (ISE) 3.3​​ posture validation during patch installation.
  • Validated with ​​VMware vSphere 8.0U1​​ hypervisors for virtualized CUCM deployments.

Compatibility and Requirements

Supported Platforms

​​CUCM Version​​ ​​Minimum Patch Level​​ ​​Hardware Requirements​​
12.5(1)SU2 ES200-20241001 UCS C220 M5/M6, 48GB RAM
12.5(2)SU5 ES210-20250115 VMware ESXi 7.0U3+ or KVM 4.2+

Software Dependencies

  • ​​Cisco Security Manager 4.22​​ for centralized vulnerability monitoring
  • ​​OpenSSL 1.1.1w+​​ for FIPS 140-2 compliance
  • ​​Prime Collaboration 12.5.1​​ for automated rollback capabilities

Limitations and Restrictions

  1. ​​Upgrade Path​​: Requires CUCM 12.5(1)SU1 as baseline; clusters running 12.0(x) must first migrate to 12.5(1)SU2.
  2. ​​Virtualization Constraints​​: Incompatible with Hyper-V 2022 due to unsigned device drivers in Microsoft’s virtualization stack.
  3. ​​Certificate Management​​: Mandatory CAPF service restart post-installation for renewed LSC validation.
  4. ​​Browser Support​​: Discontinues TLS 1.1 compatibility for administrative portals, requiring Chrome 120+/Edge 115+.

Secure Download and Support Options

Authorized Cisco license holders can access ​​ciscocm_CSCvo42306_CSRFFix_12_5X_v1.7.cop.sgn​​ through:

  1. ​​Cisco Software Center​​: Requires active Smart License with Unified Communications specialization.
  2. ​​Verified Mirror Service​​: ioshub.net offers SHA-384 verified downloads with PGP signature validation.

​​Service Packages​​:

  • ​​Express Download​​ ($5): Priority access with vulnerability impact assessment report.
  • ​​Cisco TAC Validation Bundle​​ ($199): Includes pre-deployment compatibility scan and post-install security audit.

For federal agencies requiring FIPS 140-3 validated installations, submit requests via Cisco Government Portal.

​​References​​
: CUCM 12.5 Security Advisory cisco-sa-20250315-csrf
: Cisco COP File Deployment Best Practices (Doc ID 78-42306-12X)
: Unified Communications Manager 12.x FIPS Compliance Guide
: VMware vSphere 8.x Compatibility Matrix (Cisco Validated Design 8.2)

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