UBUNTU-CVE-2020-13934

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    UBUNTU-CVE-2020-13934

    Published: 14 Jul 2020Last Modified: 15 Jul 2026
    Upstream:
    CVE-2020-13934
    Aliases:
    USN-4596-1

    Summary:

    Details: An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.

    References: https://ubuntu.com/security/CVE-2020-13934, https://www.openwall.com/lists/oss-security/2020/07/14/4, https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E, https://ubuntu.com/security/notices/USN-4596-1, https://www.cve.org/CVERecord?id=CVE-2020-13934

    Affected packages

    Package

    Name: tomcat8

    Purl: pkg:deb/ubuntu/tomcat8?arch=source&distro=esm-apps%2Fbionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    8.5.21-1ubuntu1
    8.5.29-1
    8.5.30-1
    8.5.30-1ubuntu1
    8.5.30-1ubuntu1.2
    8.5.30-1ubuntu1.3
    8.5.30-1ubuntu1.4
    8.5.39-1ubuntu1~18.04.1
    8.5.39-1ubuntu1~18.04.2
    8.5.39-1ubuntu1~18.04.3
    8.5.39-1ubuntu1~18.04.3+esm1
    8.5.39-1ubuntu1~18.04.3+esm2
    8.5.39-1ubuntu1~18.04.3+esm3
    8.5.39-1ubuntu1~18.04.3+esm4
    8.5.39-1ubuntu1~18.04.3+esm5
    8.5.39-1ubuntu1~18.04.3+esm6

    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-2020-13934 | CVE-DB