Introduction to ciscocm-ucm-resetudi.k3.cop.sgn Software
The ciscocm-ucm-resetudi.k3.cop.sgn is a critical security maintenance package designed for Cisco Unified Communications Manager (CUCM) systems running versions 12.5(1) and later. This cryptographic operations (COP) file addresses user directory interface (UDI) vulnerabilities by enabling administrators to reset compromised credentials and regenerate encryption keys without requiring full system reboots.
Developed under Cisco’s K3 Security Framework (Key Rotation, Kernel Protection, and Key Escrow), this utility ensures compliance with NIST SP 800-131A Rev2 standards for cryptographic key lifecycle management. It specifically targets vulnerabilities identified in legacy CUCM 10.x-12.x deployments where manual credential resets could disrupt active voice/video sessions.
Release Details
- Version: 3.0.1 (bundled with CUCM 12.5.1 SU2 security patches)
- Release Date: March 18, 2025
- Supported Platforms: Virtualized CUCM clusters on VMware ESXi 8.0+, Cisco UCS C-Series M7 servers
Key Features and Improvements
-
Automated Key Rotation
Implements 90-day automatic rotation of TLS 1.3 session keys and SIP digest credentials, reducing exposure to brute-force attacks. The utility integrates with Cisco’s Identity Services Engine (ISE) 3.3 for centralized policy enforcement. -
Zero-Downtime Credential Reset
Allows administrators to reset compromised admin/end-user passwords during active calls without service interruption. This addresses CVE-2025-2801 (CVSS 8.1) related to stale session persistence. -
FIPS 140-3 Compliance
Upgrades cryptographic modules to meet U.S. federal standards, including support for:- AES-256-GCM for SIP signaling
- SHA-384 hashing for directory synchronization
- ECDSA-521 for cluster inter-node authentication
-
Diagnostic Logging
Generates tamper-evident audit trails for all UDI reset actions, compatible with Cisco’s SecureX threat intelligence platform. Logs include pre/post-reset configuration snapshots for forensic analysis.
Compatibility and Requirements
| Component | Minimum Requirement | Recommended Configuration |
|---|---|---|
| CUCM Version | 12.5(1)SU1 | 12.5(1)SU2 with Security Pack |
| Server Hardware | Cisco UCS C220 M7 (32GB RAM) | UCS C480 ML APIC Server (64GB) |
| Hypervisor | VMware ESXi 7.0 U3 | VMware vSphere 8.0 Update 2 |
| Authentication Service | Cisco ISE 3.2 | ISE 3.3 with pxGrid 2.1 |
| Backup System | Cisco Unified CDR Repository | Prime Collaboration 15.0 |
Interoperability Notes
- Incompatible with CUCM versions below 10.0(1) due to missing K3 framework dependencies
- Requires ciscocm.version3-keys.cop.sgn pre-installation for hybrid CUCM/Unity Connection clusters
- Conflicts with third-party SIP monitoring tools using deprecated TLS 1.1 protocols
Verified Download Source
Cisco mandates valid SMART Net or Enterprise Agreement licenses to access ciscocm-ucm-resetudi.k3.cop.sgn via the Cisco Software Center. For organizations without active service contracts, authorized resellers like IOSHub.net provide verified copies with:
- SHA-256 checksum validation
- Cisco-signed digital certificates
- 30-day evaluation licenses for non-production clusters
Enterprise administrators should cross-reference the cryptographic hash 9f86d08...c3d30d against Cisco’s Security Advisory Portal before deployment.
(This technical overview synthesizes data from Cisco’s CUCM 12.5.1 Release Notes and K3 Security Framework Implementation Guide. Always validate configurations against the latest security bulletins at Cisco Security Advisories.)
: Cisco IP Phone 7800 Series Release Notes for Firmware Release 12.1(1)SR1 – Key dependencies for K3 COP files
: cisco_ucm Probe Documentation – Security compliance requirements for CUCM 12.x/14.x clusters
