Apache ActiveMQ Deserialization of Untrusted Data Vulnerability (CVE-2023-46604)
Severity: critical · Patch status: unknown · Since 2023-11-02 · CVE-2023-46604
Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the classpath. CISA added CVE-2023-46604 to its Known Exploited Vulnerabilities catalog on Nov 2, 2023, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Nov 23, 2023 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
