BIT-tomcat-2020-13943

    Dashboard / Vulnerabilities / BIT-tomcat-2020-13943

    BIT-tomcat-2020-13943

    Published: 6 Mar 2024Last Modified: 8 Sept 2026

    Summary:

    Details: If an HTTP/2 client connecting to Apache Tomcat 9.0.0 through 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.

    References: http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00002.html, http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00021.html, https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E, https://lists.debian.org/debian-lts-announce/2020/10/msg00019.html, https://security.netapp.com/advisory/ntap-20201016-0007/, https://www.debian.org/security/2021/dsa-4835, https://www.oracle.com/security-alerts/cpuApr2021.html, https://nvd.nist.gov/vuln/detail/CVE-2020-13943

    Affected packages

    Package

    Name: tomcat

    Purl: pkg:bitnami/tomcat

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 8.5.0
    Fixed -8.5.1

    Affected versions

    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
    BIT-tomcat-2020-13943 | CVE-DB