CVE-2023-42789: fortios Memory Corruption — Fix

Description

A out-of-bounds write in Fortinet FortiOS 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0.0 through 7.0.12, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, FortiProxy 7.4.0, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 2.0.0 through 2.0.13 allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
fortinet	fortiproxy	2.0.0 — 2.0.13
fortinet	fortiproxy	7.0.0 — 7.0.12
fortinet	fortiproxy	7.2.0 — 7.2.6
fortinet	fortiproxy	All
fortinet	fortios	6.2.0 — 6.2.15
fortinet	fortios	6.4.0 — 6.4.14
fortinet	fortios	7.0.0 — 7.0.12
fortinet	fortios	7.2.0 — 7.2.5
fortinet	fortios	All
fortinet	fortios	All

References

Advisories & Patches

https://fortiguard.com/psirt/FG-IR-23-328 https://fortiguard.com/psirt/FG-IR-23-328

Frequently Asked Questions

What is CVE-2023-42789? +

A out-of-bounds write in Fortinet FortiOS 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0.0 through 7.0.12, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, FortiProxy 7.4.0, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 2.0.0 through 2.0.13 allows attacker to execute unauthorized code or commands via specially crafted HTTP requests. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2023-42789? +

CVE-2023-42789 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2023-42789? +

CVE-2023-42789 affects products from fortinet, specifically: fortios, fortiproxy. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-42789? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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