CVE-2023-38199
CRITICAL9.8EPSS 0.04%modsecurity-crs - security update
Published: 7/13/2023Modified: 5/16/2026
Also known as:DEBIAN-CVE-2023-38199
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.
Affected packages (2)
- Debian/modsecurity-crsfrom 0, < 3.3.4-1~deb11u2
- Debian/modsecurity-crsfrom 0, < 3.3.4-1~deb11u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |