CVE-2021-30640

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    CVE-2021-30640

    Published: 12 Jul 2021Last Modified: 10 Oct 2026

    Summary:

    Details: A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.

    References: https://lists.apache.org/thread.html/r59f9ef03929d32120f91f4ea7e6e79edd5688d75d0a9b65fd26d1fe8%40%3Cannounce.tomcat.apache.org%3E, https://lists.debian.org/debian-lts-announce/2021/08/msg00009.html, https://security.gentoo.org/glsa/202208-34, https://security.netapp.com/advisory/ntap-20210827-0007/, https://www.debian.org/security/2021/dsa-4952, https://www.debian.org/security/2021/dsa-4986, https://www.oracle.com//security-alerts/cpujul2021.html, https://www.oracle.com/security-alerts/cpujan2022.html, https://www.oracle.com/security-alerts/cpuoct2021.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e498667bd7811e846771a852b16ce9f1e524b81b
    Fixed -2cdef2c0241cdf70b5edd88d3733a52e6b675047

    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
    CVE-2021-30640 | CVE-DB