CVE-2023-40718 Security feature bypass in IPS Engine

Medium 6.7 Published Updated

Attackers can evade Intrusion Prevention System features by sending crafted TCP packets due to an interpretation conflict in the Fortinet IPS Engine.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-40718?

CVE-2023-40718 is a medium-severity vulnerability in Fortinet IPS Engine, published on 10 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A interpretation conflict in Fortinet IPS Engine versions 7.321, 7.166 and 6.158 allows attacker to evade IPS features via crafted TCP packets.

Weakness: CWE-436

Which versions are affected by CVE-2023-40718?

It affects 1 product.

Products include Fortinet Fortios Ips Engine.

How do I fix CVE-2023-40718?

No fix has been published for CVE-2023-40718 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-40718 being exploited?

There is no known exploitation of CVE-2023-40718 in the wild and no public exploit code.

Sources

Also known as GHSA-hgv6-x3p4-q38v.

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