Actively exploited in the wild
Apache ActiveMQ Deserialization of Untrusted Data Vulnerability
Apache - ActiveMQ · Listed in the CISA KEV since 2023-11-02. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CVE-2023-46604
CriticalCVSS 10.0KEVSummary
The Java OpenWire protocol marshaller is vulnerable to Remote Code Execution. This vulnerability may allow a remote attacker with network access to either a Java-based OpenWire broker or client to run arbitrary shell commands by manipulating serialized class types in the OpenWire protocol to cause either the client or the broker (respectively) to instantiate any class on the classpath.
Risk Assessment
An attacker can execute arbitrary commands on the server, leading to full system compromise.
Recommendation
Update both brokers and clients to version 5.15.16, 5.16.7, 5.17.6, or 5.18.3.
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Original NVD description (English source)
The Java OpenWire protocol marshaller is vulnerable to Remote Code Execution. This vulnerability may allow a remote attacker with network access to either a Java-based OpenWire broker or client to run arbitrary shell commands by manipulating serialized class types in the OpenWire protocol to cause either the client or the broker (respectively) to instantiate any class on the classpath. Users are recommended to upgrade both brokers and clients to version 5.15.16, 5.16.7, 5.17.6, or 5.18.3 which fixes this issue.