Deserialization in Apache Jmeter

CVE-2019-0187

Unauthenticated RCE is possible when JMeter is used in distributed mode (-r or -R command line options). Attacker can establish a RMI connection to a jmeter-server using RemoteJMeterEngine and proceed with an attack using untrusted data deserialization. This only affect tests running in Distributed mode. Note that versions before 4.0 are not able to encrypt traffic between the nodes, nor authenticate the participating nodes so upgrade to JMeter 5.1 is also advised.

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.027 (85.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-0187?
CVE-2019-0187 is a critical-severity vulnerability in Apache Jmeter, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 9.8/10. Published 2019-03-06.
How severe is CVE-2019-0187?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-0187 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.