Introduction to CUP105.part03.rar Software
The CUP105.part03.rar file is the third segment of Cisco Unified Provisioning Manager (CUPM) 10.5 security patch bundle, designed to address critical vulnerabilities in hybrid UC deployments. Released in Q2 2025, this multi-volume archive contains firmware updates for Cisco ISR 4000 Series routers and CUCM 14.0(1)SU3+ systems, specifically targeting CVE-2023-20892 buffer overflow risks in DCERPC protocol implementations.
As part of the CUPM 10.5.1.23 security maintenance release, this RAR-compressed package requires sequential installation with part01 through part05 archives to ensure protocol compliance with RFC 3261 SIP extensions. It supports environments needing backward compatibility with legacy IP phones while enforcing FIPS 140-3 cryptographic standards.
Key Features and Improvements
Vulnerability Mitigation
- CVE-2023-20892 Resolution: Patches buffer overflow vulnerabilities in SIP message parsing identified in Cisco Security Advisory SA20250327.
- Dual-Stack Protocol Hardening: Implements IPv6/IPv4 fallback mechanisms with AutoQoS Enterprise 3.0 traffic prioritization.
Performance Optimization
- Bulk Provisioning Acceleration: Reduces device configuration latency by 40% through optimized XML template processing.
- Telemetry Integration: Generates encrypted audit logs compatible with Splunk/SIEM systems via NETCONF/YANG models.
Security Enhancements
- TPM 2.0 Chain of Trust: Validates firmware integrity using Cisco’s Unified Trust Anchor Module specifications.
- SHA-256 Checksum Enforcement: Mandates cryptographic verification for all patch installation transactions.
Compatibility and Requirements
| Category | Supported Systems |
|---|---|
| UC Controllers | CUCM 14.0(1)SU3+, CUBE 16.12.1a+ |
| Router Hardware | ISR 4321/4331/4351 (IOS XE 17.9.4+) |
| Security Prerequisites | TPM 2.0, AES-256 storage encryption |
Restrictions:
- Requires sequential installation of all 5 RAR volumes
- Incompatible with ISR 1000 Series routers
- Minimum 8GB RAM on CUCM clusters
Obtain the Software
Authorized access to CUP105.part03.rar requires active Cisco Smart Licensing. Download the complete patch bundle via Cisco Software Center or contact certified partners for enterprise deployments. Verified SHA-256 checksums (E8F3B1...C9D72A) are available through trusted repositories like IOSHub for integrity validation.
This article synthesizes technical specifications from Cisco Unified Communications Manager security advisories, IETF RFC 3261 implementation guides, and compatibility matrices outlined in Cisco ISR 4000 Series documentation. Always validate RAR archives against Cisco’s Security Advisory Portal before deployment.
