Out-of-bounds write in FortiProxy and FortiOS - CVE-2023-42789
Published: March 13, 2024
Vulnerability identifier: #VU87497
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-42789
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in captive portal. A remote attacker can send specially crafted HTTP requests to the affected device, trigger an out-of-bounds write and execute arbitrary code on the target system.
Affected software
FortiProxy
FortiOS
FortiOS
How to mitigate CVE-2023-42789
Install updates from vendor's website.
FortiProxy - addressed in versions 2.0.14, 7.0.13, 7.2.7, 7.4.1
FortiOS - addressed in versions 6.2.16, 6.4.15, 7.0.13, 7.2.6, 7.4.2
FortiOS - addressed in versions 6.2.16, 6.4.15, 7.0.13, 7.2.6, 7.4.2