CVE-2023-38199: Critical severity OWASP coreruleset vulnerability
coreruleset (aka OWASP ModSecurity Core Rule Set) through 3.3.4 does not block multiple Content-Type headers, which might allow attackers to bypass a WAF with a crafted payload, aka "Content-Type confusion." This occurs when the web application relies on only the last Content-Type header.
Other sources
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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2023-38199?
CVE-2023-38199 is a vulnerability in coreruleset (aka OWASP ModSecurity Core Rule Set) through version 3.3.4 that allows attackers to bypass a Web Application Firewall (WAF) by using multiple Content-Type request headers.
What is the severity of CVE-2023-38199?
CVE-2023-38199 has a severity level of critical with a severity value of 9.8.
How does CVE-2023-38199 affect coreruleset?
CVE-2023-38199 affects coreruleset (aka OWASP ModSecurity Core Rule Set) through version 3.3.4 by allowing attackers to bypass the WAF with a crafted payload using multiple Content-Type request headers.
Is there a fix for CVE-2023-38199?
As of now, there is no fix available for CVE-2023-38199. It is recommended to follow the official GitHub issue and pull request for updates.
What is the Common Weakness Enumeration (CWE) ID for CVE-2023-38199?
The CWE ID for CVE-2023-38199 is CWE-843.