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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-46604

Apache ActiveMQ Deserialization of Untrusted Data Vulnerability

KEVCRITICAL 9.8EPSS 99.7%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 23 November 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

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.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
99.72% probability · 100th percentile
CISA KEV
Listed 2 November 2023 · due 23 November 2023 · used in ransomware campaigns
Weakness
CWE-502
Affected
apache/activemq · apache/activemq legacy openwire module · debian/debian linux · netapp/e-series santricity unified manager · netapp/e-series santricity web services proxy · netapp/santricity storage plugin
Source
security@apache.org

CISA notes

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://activemq.apache.org/security-advisories.data/CVE-2023-46604-announcement.txt; https://nvd.nist.gov/vuln/detail/CVE-2023-46604

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.