Description
In Hazelcast before 3.11, the cluster join procedure is vulnerable to remote code execution via Java deserialization. If an attacker can reach a listening Hazelcast instance with a crafted JoinRequest, and vulnerable classes exist in the classpath, the attacker can run arbitrary code.
Remediation
References
https://access.redhat.com/errata/RHSA-2019:2413
https://github.com/hazelcast/hazelcast/issues/8024
https://github.com/hazelcast/hazelcast/pull/12230
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