UBUNTU-CVE-2020-13935

    Dashboard / Vulnerabilities / UBUNTU-CVE-2020-13935

    UBUNTU-CVE-2020-13935

    Published: 14 Jul 2020Last Modified: 15 Jul 2026
    Upstream:
    CVE-2020-13935

    Summary:

    Details: The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

    References: https://ubuntu.com/security/CVE-2020-13935, https://www.openwall.com/lists/oss-security/2020/07/14/3, https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%40%3Cannounce.tomcat.apache.org%3E, https://ubuntu.com/security/notices/USN-4448-1, https://ubuntu.com/security/notices/USN-4596-1, https://www.cve.org/CVERecord?id=CVE-2020-13935

    Affected packages

    Package

    Name: tomcat7

    Purl: pkg:deb/ubuntu/tomcat7?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    7.0.42-1
    7.0.47-1
    7.0.50-1
    7.0.52-1
    7.0.52-1ubuntu0.1
    7.0.52-1ubuntu0.3
    7.0.52-1ubuntu0.6
    7.0.52-1ubuntu0.7
    7.0.52-1ubuntu0.8
    7.0.52-1ubuntu0.9
    7.0.52-1ubuntu0.10
    7.0.52-1ubuntu0.11
    7.0.52-1ubuntu0.13
    7.0.52-1ubuntu0.14
    7.0.52-1ubuntu0.15
    7.0.52-1ubuntu0.16
    7.0.52-1ubuntu0.16+esm1
    7.0.52-1ubuntu0.16+esm2

    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-2020-13935 | CVE-DB