Interpretation Conflict in IPSEngine - CVE-2023-40718
Published: December 15, 2023
Vulnerability identifier: #VU84443
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-40718
CWE-ID: CWE-436
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
IPSEngine
IPSEngine
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass implemented security policies.
The vulnerability exists due to an interpretation conflict when handling custom TCP flags. A remote attacker can send specially crafted TCP packets to evade NGFW policies or IPS Engine protection.
How to mitigate CVE-2023-40718
Install updates from vendor's website.