Vulnerability · Published Mar 12, 2024 · Assigned by fortinet

CVE-2023-42789

Critical 9.3

In plain English

A critical-severity out-of-bounds write in FortiOS from Fortinet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.3% (higher than 89% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)9.3Critical

Exploit odds (30 days)3.3%top 11.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

Official description

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 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 through 7.2.6, FortiProxy 7.0.0 through 7.0.12, FortiProxy 2.0.0 through 2.0.13, FortiSASE 23.2.b allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.

Affected products (as reported)

Vendor	Product	Versions
Fortinet	FortiProxy	7.4.07.2.0 – through 7.2.67.0.0 – through 7.0.122.0.0 – through 2.0.13
Fortinet	FortiSASE	23.2.b
Fortinet	FortiOS	7.4.0 – through 7.4.17.2.0 – through 7.2.57.0.0 – through 7.0.126.4.0 – through 6.4.146.2.0 – through 6.2.15

Weakness: CWE-787 · 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

References

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