CVE-2023-38199 Security feature bypass in n/a
Attackers can bypass WAF protections by sending multiple Content-Type headers, exploiting confusion between the WAF and backend application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-38199?
CVE-2023-38199 is a critical vulnerability in n/a, published on 13 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
coreruleset (aka OWASP ModSecurity Core Rule Set) through 3.3.4 does not detect multiple Content-Type request headers on some platforms. This might allow attackers to bypass a WAF with a crafted payload, aka "Content-Type confusion" between the WAF and the backend application. This occurs when the web application relies on only the last Content-Type header. Other platforms may reject the additional Content-Type header or merge conflicting headers, leading to detection as a malformed header.
Weakness: CWE-843
Which versions are affected by CVE-2023-38199?
It affects 1 product.
Products include Owasp Coreruleset.
How do I fix CVE-2023-38199?
Upgrade to a fixed version.
Is CVE-2023-38199 being exploited?
There is no known exploitation of CVE-2023-38199 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2023-38199, GHSA-662c-vg67-m327, UBUNTU-CVE-2023-38199, openSUSE-SU-2024:13187-1.