Improper Neutralization of Special Elements in Output Used by a Downstream Component in Flink - CVE-2020-1960

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Main Vulnerability Database Vulnerabilities #VU109015

Improper Neutralization of Special Elements in Output Used by a Downstream Component in Flink - CVE-2020-1960

Published: May 13, 2025


Vulnerability identifier: #VU109015
CSH Severity: Low
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-1960
CWE-ID: CWE-74
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A local user with local access to the machine and JMX port can execute a man-in-the-middle attack using a specially crafted request to rebind the JMXRMI registry to one under the attacker's control when running a process with an enabled JMXReporter, with a port configured via metrics.reporter.reporter_name>.port.


Affected software

Flink
IBM Cloud Pak for Business Automation

How to mitigate CVE-2020-1960

Install updates from vendor's website.

Flink - addressed in versions 1.9.3, 1.10.1
IBM Cloud Pak for Business Automation - update to 20.0.2 ifix 001

External References

Related Security Bulletins