Interpretation Conflict in IPSEngine - CVE-2023-40718

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Main Vulnerability Database Vulnerabilities #VU84443

Interpretation Conflict in IPSEngine - CVE-2023-40718

Published: December 15, 2023


Vulnerability identifier: #VU84443
CSH Severity: Medium
CVSSv4.0: 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
Vulnerable software:
IPSEngine
Software vendor:
Fortinet, Inc

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.


Remediation

Install updates from vendor's website.

External links