UBUNTU-CVE-2021-41079

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    UBUNTU-CVE-2021-41079

    Published: 16 Sept 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-41079

    Summary:

    Details: Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service.

    References: https://ubuntu.com/security/CVE-2021-41079, https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E, https://github.com/apache/tomcat/commit/d4b340fa8feaf55831f9a59350578f7b6ca048b8, https://github.com/apache/tomcat/commit/b90d4fc1ff44f30e4b3aba622ba6677e3f003822, https://ubuntu.com/security/notices/USN-5360-1, https://www.cve.org/CVERecord?id=CVE-2021-41079, https://ubuntu.com/security/notices/USN-6943-1

    Affected packages

    Package

    Name: tomcat9

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -9.0.16-3ubuntu0.18.04.2

    Affected versions

    9.0.16-3~18.04.1
    9.0.16-3ubuntu0.18.04.1

    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-2021-41079 | CVE-DB