UBUNTU-CVE-2023-38199

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    UBUNTU-CVE-2023-38199

    Published: 13 Jul 2023Last Modified: 20 May 2026
    Upstream:
    CVE-2023-38199

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2023-38199, https://github.com/coreruleset/coreruleset/issues/3191, https://github.com/coreruleset/coreruleset/pull/3237, https://www.cve.org/CVERecord?id=CVE-2023-38199

    Affected packages

    Package

    Name: modsecurity-crs

    Purl: pkg:deb/ubuntu/modsecurity-crs?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.2.9-1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2023-38199 | CVE-DB