CVE-2023-42789CWE-787

A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through…

Critical · published March 12, 2024

CVSS v3.1
9.3
EPSS
3%
Percentile
88.5
In the wild
Unconfirmed
What it is

🚨 An out-of-bounds write vulnerability in Fortinet FortiOS and FortiProxy opens the door for attackers to run unauthorized commands with just a specially crafted HTTP request! 🔥 Think of it as a chef accidentally spilling ingredients into the wrong dish; it can lead to a catastrophic culinary disaster if not addressed promptly. Just like a restaurant would never allow a rogue ingredient to spoil a meal, you can’t let this vulnerability linger in your security kitchen! If exploited, an attacker could execute arbitrary code or commands on the affected systems, potentially leading to a complete system takeover. This could result in data breaches, unauthorized access to sensitive information, and even a total compromise of your security infrastructure—absolutely devastating!

Put simply

Think of it as a chef accidentally spilling ingredients into the wrong dish; it can lead to a catastrophic culinary disaster if not addressed promptly. Just like a restaurant would never allow a rogue ingredient to spoil a meal, you can’t let this vulnerability linger in your security kitchen! This out-of-bounds write vulnerability allows attackers to manipulate memory, leading to the execution of unauthorized code through specially crafted HTTP requests. Versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, and several others are affected, meaning a wide range of installations might be at risk.

What to do

If exploited, an attacker could execute arbitrary code or commands on the affected systems, potentially leading to a complete system takeover. This could result in data breaches, unauthorized access to sensitive information, and even a total compromise of your security infrastructure—absolutely devastating! Patch immediately to FortiOS version 7.4.2 or later, FortiProxy version 7.2.7 or later, and ensure that all systems are updated promptly. Review your configurations and monitor for any suspicious activity that could indicate exploitation attempts. You've got this! Follow these steps to secure your systems, and you'll be a security hero in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.3 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.03306 · 88.5th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2024-03-12T15:09Z
EPSS history
Timeline
  • 12 MAR 15:09Z
    A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through…
    cvelistv5