Krishna Chidrawar created KAFKA-20038:
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Summary: [CVE-2025-68161] [log4j-core] [2.17.1][Kafka]
Key: KAFKA-20038
URL: https://issues.apache.org/jira/browse/KAFKA-20038
Project: Kafka
Issue Type: Bug
Reporter: Krishna Chidrawar
The Socket Appender in Apache Log4j Core versions 2.0-beta9 through 2.25.2 does
not perform TLS hostname verification of the peer certificate, even when the
verifyHostName
https://logging.apache.org/log4j/2.x/manual/appenders/network.html#SslConfiguration-attr-verifyHostName
configuration attribute or the log4j2.sslVerifyHostName
https://logging.apache.org/log4j/2.x/manual/systemproperties.html#log4j2.sslVerifyHostName
system property is set to true. This issue may allow a man-in-the-middle
attacker to intercept or redirect log traffic under the following conditions: *
The attacker is able to intercept or redirect network traffic between the
client and the log receiver. * The attacker can present a server certificate
issued by a certification authority trusted by the Socket Appender's configured
trust store (or by the default Java trust store if no custom trust store is
configured). Users are advised to upgrade to Apache Log4j Core version 2.25.3,
which addresses this issue. As an alternative mitigation, the Socket Appender
may be configured to use a private or restricted trust root to limit the set of
trusted certificates.
CVE LINK : [https://nvd.nist.gov/vuln/detail/CVE-2025-68161]
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