CVE-2020-13920

Activemq vulnerability

CVSS

5.9

EPSS

4.6%

EPSS pct

91th

Exploited

No known

Apache ActiveMQ uses LocateRegistry.createRegistry() to create the JMX RMI registry and binds the server to the "jmxrmi" entry. It is possible to connect to the registry without authentication and call the rebind method to rebind jmxrmi to something else. If an attacker creates another server to proxy the original, and bound that, he effectively becomes a man in the middle and is able to intercept the credentials when an user connects. Upgrade to Apache ActiveMQ 5.15.12.

Affected vendor

Apache

Affected product

Activemq

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness type (CWE)

CWE-306 — Missing Authentication for Critical Function

Published

2020-09-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 4.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2020-13920

Confirm whether Apache Activemq is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-13920.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-13920

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-13920 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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