FortiOS and FortiProxy Vulnerability

Critical Vulnerability - FortiOS and FortiProxy Vulnerability

Bar Refael

January 10, 2024

Based on a recent advisory from the Cybersecurity and Infrastructure Security Agency (CISA), Fortinet has released a crucial security update to address a vulnerability in FortiOS and FortiProxy software. This update is a preventative measure against potential cyber threats that could exploit this vulnerability to gain control of affected systems.

Vulnerability Details:

  • Type: Improper Privilege Management Vulnerability [CWE-269]
  • Affected Software: FortiOS and FortiProxy
  • Impact: An authenticated attacker may exploit this vulnerability to perform unauthorized actions in a High Availability (HA) cluster via crafted HTTP or HTTPS requests.

Affected Versions and Solutions:

  • FortiOS 7.4: Versions 7.4.0 through 7.4.1 should upgrade to 7.4.2 or above.
  • FortiOS 7.2: Version 7.2.5 should upgrade to 7.2.6 or above.
  • FortiProxy 7.4: Versions 7.4.0 through 7.4.1 should upgrade to 7.4.2 or above.
  • Upgrade Assistance: Use Fortinet’s upgrade tool at https://docs.fortinet.com/upgrade-tool.
  • Virtual Patch: “FortiOS.HA.RestAPI.Authentication.Bypass” available in FMWP db update 23.104.

CISA Advisory:

CISA urges users and administrators to review the FG-IR-23-315 FortiOS & FortiProxy security bulletin and apply necessary updates to mitigate the risk effectively.

OP Innovate Recommendations:

  • Update Systems: Ensure affected versions of FortiOS and FortiProxy are updated as per guidelines.
  • Apply Virtual Patch: If immediate upgrade is not feasible, utilize the virtual patch provided.
  • Enhanced Monitoring: Post-upgrade, monitor systems for any signs of security breaches or unusual activities.
  • Stay Informed: Keep abreast of updates from Fortinet and ongoing advisories from CISA.

This vulnerability in FortiOS and FortiProxy underlines the importance of timely updates and cybersecurity vigilance. OP Innovate emphasizes the need for quick action in line with CISA’s advisory and is dedicated to supporting our customers through these updates.

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