NULL pointer dereference in FortiProxy and FortiOS - CVE-2023-36641
Published: November 17, 2023
Vulnerability identifier: #VU83247
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-36641
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when processing HTTP headers in SSL VPN. A remote user can send a specially crafted HTTP request to the system and perform a denial of service (DoS) attack.
Affected software
FortiProxy
RUGGEDCOM APE1808
FortiOS
RUGGEDCOM APE1808
FortiOS
How to mitigate CVE-2023-36641
Install updates from vendor's website.
FortiProxy - addressed in versions 7.0.11, 7.2.5
FortiOS - addressed in versions 7.0.13, 7.2.6, 7.4.1
FortiOS - addressed in versions 7.0.13, 7.2.6, 7.4.1