CVE-2023-38199
modsecurity-crs - security update
9.8
CRITICAL
CVSS 3.1
EPSS 0.04%
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.
How to fix CVE-2023-38199
To remediate CVE-2023-38199, upgrade the affected package to a fixed version below.
- —upgrade to 3.3.4-1~deb11u2 or later
- —upgrade to 3.3.4-1~deb11u2 or later
Is CVE-2023-38199 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.3.4-1~deb11u2
- from 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 |