CVE-2023-46604 on CISA KEV

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

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

03Notes & references

• activemq.apache.org — https://activemq.apache.org/security-advisories.data/CVE-2023-46604-announcement…
• www.openwall.com — https://www.openwall.com/lists/oss-security/2023/10/27/5
• security.netapp.com — https://security.netapp.com/advisory/ntap-20231110-0010/
• packetstormsecurity.com — https://packetstormsecurity.com/files/175676/Apache-ActiveMQ-Unauthenticated-Rem…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/11/msg00013.html
• seclists.org — http://seclists.org/fulldisclosure/2024/Apr/18

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Apache Software Foundation	Apache ActiveMQ	5.18.0, 5.17.0, 5.16.0, 0
Apache Software Foundation	Apache ActiveMQ Legacy OpenWire Module	5.18.0, 5.17.0, 5.16.0, 5.8.0

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

Open in Sigma generator →