Homepage

org.apache.logging.log4j:log4j-core@2.0-beta3

  • latest version

    2.26.1

  • latest non vulnerable version

    2.26.1

  • first published

    13 years ago

  • latest version published

    8 days ago

  • licenses detected

  • package registry

    View on Maven Central Repository
    • Go back to all versions of this package
    Report a new vulnerability Found a mistake?

    Direct Vulnerabilities

    Known vulnerabilities in the org.apache.logging.log4j:log4j-core package. This does not include vulnerabilities belonging to this package’s dependencies.

    Fix vulnerabilities automatically

    Snyk's AI Trust Platform automatically finds the best upgrade path and integrates with your development workflows. Secure your code at zero cost.

    Fix for free
    VulnerabilityVulnerable Version
    • H
    Improper Encoding or Escaping of Output

    org.apache.logging.log4j:log4j-core is a logging library for Java.

    Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in the XmlLayout plugin. An attacker can cause log events to be silently lost or malformed by injecting XML 1.0 forbidden characters into log messages or MDC values. This may result in malformed XML output, which can cause downstream log-processing systems to drop affected records or prevent log events from being delivered to their intended destinations.

    How to fix Improper Encoding or Escaping of Output?

    A fix was pushed into the master branch but not yet published.

    [2.0-alpha1,2.25.4)[3.0.0-alpha1,)
    • M
    Improper Validation of Certificate with Host Mismatch

    org.apache.logging.log4j:log4j-core is a logging library for Java.

    Affected versions of this package are vulnerable to Improper Validation of Certificate with Host Mismatch due to the lack of TLS hostname verification in the SocketAppender component. An attacker can intercept or redirect log traffic by performing a man-in-the-middle attack if they are able to intercept or redirect network traffic between the client and the log receiver and can present a server certificate issued by a certification authority trusted by the configured trust store or the default Java trust store.

    How to fix Improper Validation of Certificate with Host Mismatch?

    Upgrade org.apache.logging.log4j:log4j-core to version 2.25.3 or higher.

    [,2.25.3)
    • L
    Man-in-the-Middle (MitM)

    org.apache.logging.log4j:log4j-core is a logging library for Java.

    Affected versions of this package are vulnerable to Man-in-the-Middle (MitM). Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender.

    How to fix Man-in-the-Middle (MitM)?

    Upgrade org.apache.logging.log4j:log4j-core to version 2.13.2 or higher.

    [,2.13.2)
    • C
    Deserialization of Untrusted Data

    org.apache.logging.log4j:log4j-core is a logging library for Java.

    Affected versions of this package are vulnerable to Deserialization of Untrusted Data. When using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.

    How to fix Deserialization of Untrusted Data?

    Upgrade org.apache.logging.log4j:log4j-core to version 2.8.2 or higher.

    [,2.8.2)
    Go back to all versions of this package