DEBIAN-CVE-2023-5379

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    DEBIAN-CVE-2023-5379

    Published: 12 Dec 2023Last Modified: 26 Oct 2026
    Upstream:
    CVE-2023-5379

    Summary:

    Details: A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by mod_cluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because mod_proxy_cluster marks the JBoss EAP instance as an error worker when the TCP connection is closed from the backend after sending the AJP request without receiving an AJP response, and stops forwarding. This issue could allow a malicious user could to repeatedly send requests that exceed the max-header-size, causing a Denial of Service (DoS).

    References: https://security-tracker.debian.org/tracker/CVE-2023-5379

    Affected packages

    Package

    Name: undertow

    Purl: pkg:deb/debian/undertow?arch=source&distro=forky

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.3.18-1

    Affected versions

    1.3.11-1
    1.3.16-1
    1.3.19-1
    1.3.21-1
    1.3.23-1
    1.3.4-1
    1.3.5-1
    1.3.7-1

    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
    DEBIAN-CVE-2023-5379 | CVE-DB