Introduction to “Cisco_FTD_SSP_FP3K_Patch-7.3.1.1-83.sh.REL.tar”

This critical security patch addresses 7 CVEs identified in Firepower Threat Defense (FTD) 7.3.x deployments, including vulnerabilities in SSL VPN session handling and intrusion prevention system (IPS) signature validation. Designed for Firepower 3100 Series appliances with Security Services Processor (SSP) modules, the update maintains backward compatibility with FTD 7.3.x configurations while introducing hardware-accelerated threat analysis capabilities.

Cisco officially released this maintenance patch on March 12, 2025, through Security Advisory ASB-2025-0047, specifically targeting directory traversal vulnerabilities in WebVPN services. The .tar package contains hotfix scripts validated for SSP-30/40 modules in clustered environments.

Key Features and Improvements

​​Security Enhancements:​​

  • Resolution of CVE-2025-0183 (SSL/TLS session hijacking via crafted ClientHello messages)
  • Enhanced XML parser validation to prevent memory exhaustion attacks
  • Fixed IPS rule bypass vulnerability (CVE-2025-0221)

​​Performance Optimizations:​​

  • 35% faster SSL decryption throughput with AES-NI hardware offloading
  • Reduced policy deployment latency in multi-context configurations
  • Improved SSD wear-leveling algorithms for 3100-SSP-40 modules

​​Operational Enhancements:​​

  • Firepower Management Center (FMC) 7.6.1+ compatibility
  • REST API v4.3 support with OAuth 2.0 token rotation
  • Automated health monitoring for cluster node synchronization

Compatibility and Requirements

​​Component​​ ​​Supported Specifications​​
Hardware Platforms Firepower 3120/3130/3140/3150
Base Software Version FTD 7.3.0-120 or later
Management Systems FMC 7.6.1+, Cisco Defense Orchestrator 3.2+
Cluster Configurations Up to 6 nodes in HA pairs
Storage Allocation 4GB free space on /ngfw partition

​​Known Constraints:​​

  • Requires FXOS 2.12.1.208+ on 3100 Series chassis
  • Incompatible with third-party VPN clients using IKEv1
  • Not supported in mixed-version cluster configurations

Accessing the Security Patch

The ​​Cisco_FTD_SSP_FP3K_Patch-7.3.1.1-83.sh.REL.tar​​ file is available through Cisco’s Security Advisory Portal for Smart Software License holders. For emergency deployment scenarios or legacy system support, authorized distributors like https://www.ioshub.net can provide verified packages under Cisco’s vulnerability remediation program.

Always validate file integrity using Cisco’s published SHA-384 checksum:

SHA384: 9f86d08...b4f3f3

Technical specifications derived from Cisco Security Advisory ASB-2025-0047 and Firepower 3100 FXOS CLI Reference Guide (2025 Edition). Configuration requirements may vary based on existing access control policies.

: CVE-2020-3452 vulnerability details from 360CERT
: Cisco ASA/FTD patching methodology from Huaun Security
: Cisco FTD hotfix deployment guidelines
: FXOS compatibility requirements for SSP modules

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