CVE intelligence and bounded remediation

CVE-2023-46604 — Apache ActiveMQ Deserialization of Untrusted Data Vulnerability

Critical CVSS 10 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 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.

Severity
Critical
CVSS
10 (3.1)
Published
2023-10-27
CISA KEV
Known exploited
Ecosystem
java/maven
Weaknesses
CWE-502

Affected products

  • apache / activemq
  • apache / activemq_legacy_openwire_module
  • debian / debian_linux / 10.0
  • debian / debian_linux / 11.0
  • netapp / e-series_santricity_unified_manager
  • netapp / e-series_santricity_web_services_proxy

Showing 6 representative product identities from 13 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Unsafe deserialization and object reconstruction

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Check exposure

  • Inventory serialization formats accepted from requests, queues, caches, files, cookies, and cross-service messages.
  • Trace whether untrusted input can select classes, types, callbacks, constructors, or object hooks during decoding.
  • Identify signing, schema validation, trust-boundary, and compatibility settings for each decoder.

Remediate safely

  • Replace native object deserialization with a data-only format and explicit schema validation.
  • If replacement is not immediate, use a safe decoder with a minimal type allowlist and disable polymorphic or executable hooks.
  • Update the affected library and add inert tests for unknown types, extra fields, malformed nesting, and unsigned data.

Authoritative sources

Complete CVE record and remediation plan

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