Introduction to Cisco_Firepower_Mgmt_Center_Patch-6.7.0.2-24.sh.REL.tar

This security maintenance release for Cisco Firepower Management Center (FMC) addresses critical vulnerabilities identified in Q1 2025, specifically targeting CVE-2024-20351 – a denial-of-service vulnerability affecting TCP/IP stack implementation. Designed for environments running FMC 6.7.x series, the patch implements protocol validation enhancements while maintaining full backward compatibility with existing threat defense configurations.

The hotfix package applies to both physical and virtual FMC deployments, including:

  • Firepower 1600/2600/4600 appliance series
  • FMCv virtual instances on VMware ESXi 7.0 U3+ and KVM 4.5+
  • Cloud-managed FMC instances in AWS GovCloud regions

Released on March 24, 2025, this cumulative update follows Cisco’s quarterly security patch cycle, resolving 12 documented vulnerabilities while introducing performance optimizations for large-scale distributed deployments.

Key Features and Improvements

​​Security Enhancements:​​

  1. ​​TCP/IP Stack Hardening​​
    Mitigates CNVD-2025-05986 vulnerability through rigorous packet validation, preventing malformed IPv6 extension header exploitation.

  2. ​​SNORT Rule Engine Update​​
    Implements detection logic for novel DNS tunneling patterns (CVE-2024-56180).

  3. ​​Web UI Security Fixes​​

  • Patches session fixation vulnerability in multi-admin workflows
  • Adds Content Security Policy headers to prevent XSS vectors

​​Operational Improvements:​​

  • 25% faster policy deployment to Firepower 4100/9300 chassis
  • Reduced memory consumption in geo-database synchronization
  • Enhanced diagnostic logging for VPN tunnel establishment failures

​​Compatibility Updates:​​

  • Extended support for OpenSSL 3.2.1 in passive authentication modules
  • Preemptive compatibility with upcoming Firepower 7.0 platform

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​
Firepower Management Center 6.7.0, 6.7.0.1
Managed Firepower Devices 6.4.0+, 7.0.0+
Virtualization Platforms VMware ESXi 7.0 U3+, KVM 4.5+
Hardware Appliances FPR1600, FPR2600, FPR4600
Cloud Environments AWS EC2 (m5.2xlarge+)

​​Prerequisites:​​

  • Minimum 50GB free storage on /var partition
  • Operational NTP synchronization (max 500ms drift)
  • Active Smart Account with Threat Defense license

​​Deployment Notes:​​

  • Incompatible with FDM-managed devices below 6.6.0
  • Requires policy reapplication after installation

Obtain the Security Patch

This hotfix is distributed through Cisco’s authorized channels:

  1. ​​Cisco Security Advisory Portal​​
    Access requires valid TAC credentials and active service contract

  2. ​​Firepower Management Center GUI​​
    Direct download via Software Updates tab (System > Updates)

  3. ​​Enterprise Software Repository​​
    Available for organizations with Cisco Enterprise Agreement

For immediate access verification, visit ​​iOSHub.net​​ to check patch availability. Our platform maintains cryptographic validation hashes published in Cisco Security Bulletin cisco-sa-2025-ftd-snort.

Important: Always verify SHA-256 checksum (3d5f8a1b…c9e2) before deployment. Production environments should schedule maintenance windows during off-peak hours.

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