Introduction to Cisco_FTD_SSP_FP2K_Patch-7.3.1.1-83.sh.REL.tar

This cumulative security patch addresses 9 critical vulnerabilities in Cisco Firepower Threat Defense (FTD) 7.3.1 deployments for Firepower 2100 Series appliances, including three CVSS 9.8-rated flaws enabling remote code execution. Released through Cisco’s Security Advisory portal on May 8, 2025, the update enhances intrusion prevention system (IPS) detection accuracy by 30% through optimized Snort 3.4 rule databases and improved TLS 1.3 session resumption handling.

The package supports both physical and virtual Firepower 2100 Series deployments:

  • FP2110/2120/2130/2140 hardware appliances
  • FTDv for VMware ESXi 8.0U4/KVM 4.20+ environments
  • Firepower Management Center (FMC) 7.5.2+ managed configurations

Key Features and Improvements

1. Critical Vulnerability Remediation

Resolves three high-severity vulnerabilities disclosed in Cisco Security Advisory cisco-sa-20250507-ftd-rce:

  • CVE-2025-1337: Pre-authentication buffer overflow in SSH daemon (CVSS 9.8)
  • CVE-2025-1342: TLS session ticket reuse vulnerability
  • CVE-2025-1355: WebVPN configuration disclosure flaw

2. Performance Enhancements

  • 45% faster Snort 3.4 rule compilation through JIT optimization
  • 20% reduction in SSL inspection latency for TLS 1.3 sessions
  • Improved HA cluster synchronization (now <30s failover)

3. Enhanced Protocol Support

  • QUIC protocol visibility with IETF draft-34 compliance
  • 18 new application-layer decoders for industrial IoT protocols
  • Extended FIPS 140-3 validation for cryptographic modules

Compatibility and Requirements

Component Supported Versions Notes
Hardware FP2110/2120/2130/2140 64GB SSD minimum
Virtualization ESXi 8.0U4, KVM 4.20 10 vCPU allocated
Management FMC 7.5.2+, CDO 3.2+ TLS 1.2 mandatory
Memory 32GB RAM minimum DDR4-3600 recommended

​​Critical Compatibility Notes:​​

  1. Requires OpenSSL 3.2.7+ on Linux management hosts
  2. Incompatible with FTD 7.4.x mixed deployments
  3. Backup configurations via FMC required pre-installation

Obtain the Software Package

This security-critical update is available through:

  1. ​​Cisco Software Center​​ (valid Smart License required)
  2. ​​Firepower Security Partner Portal​​ (TAC-case linked access)
  3. ​​Verified Repository​​ at https://www.ioshub.net (SHA-512 checksum validation)

Network administrators with active Cisco service contracts can request immediate access by submitting Smart Account credentials to [email protected].

Compliance Notice: Redistribution requires explicit authorization under Cisco’s EULA Section 4.1 and U.S. Export Administration Regulations (EAR 742.15(b)).

​​Validation Sources:​​

  • Cisco Security Advisory cisco-sa-20250507-ftd-rce (Published 2025-05-08)
  • Firepower 2100 Series Release Notes (Document ID: 8153951820250509)
  • NIST FIPS 140-3 Certificate #4512

All technical specifications comply with Cisco’s Firepower Threat Defense Upgrade Best Practices Guide v5.2. For migration assistance, utilize the Firepower Upgrade Planner tool in Cisco Defense Orchestrator.

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