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Security Bulletin: Rational Performance Tester (RPT) is vulnerable to arbitrary code execution due to Apache Log4j (CVE-2021-44228)

Security Bulletin


Apache Log4j vulnerability impacts Rational Performance Tester (RPT) Apache JMeter™ Test Extension. Rational Performance Tester (RPT) includes a vulnerable Log4j library that may be detected by a vulnerability scan. This bulletin addresses the vulnerabilities for the reported CVE-2021-44228. The below fix package removes the Log4j version 2 library.

Vulnerability Details

CVEID:   CVE-2021-44228
DESCRIPTION:   Apache Log4j could allow a remote attacker to execute arbitrary code on the system, caused by the failure to protect against attacker controlled LDAP and other JNDI related endpoints by JNDI features. By sending a specially crafted code string, an attacker could exploit this vulnerability to load arbitrary Java code on the server and take complete control of the system. Note: The vulnerability is also called Log4Shell or LogJam.
CVSS Base score: 10
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
Rational Performance Tester 10.2
Rational Performance Tester10.1
Rational Performance Tester10.0
Rational Performance Tester9.5



IBM strongly recommends addressing the vulnerability now.

Customers that are using the Apache JMeter Test Extension should upgrade to Rational Performance Tester version 10.2 and use Installation Manager to update to version iFix 01.

Customers not using the Apache JMeter Test Extension may remediate their systems by uninstalling the Apache JMeter Test Extension OR installing Rational Performance Tester version iFix 01.   

Rational Performance Tester version iFix 01 removes the vulnerable Apache Log4j version 2 library from Rational Performance Tester.
To uninstall the Apache JMeter Test Extension:
1. Stop or exit from the Eclipse instance of Rational Performance Tester.
2. Start Installation Manager.
3. Select Modify.
4. Clear the Apache JMeter Test Extension checkbox.

Rational Performance Tester version iFix 01 can be updated via Installation Manager or downloaded from Fix Central.
To install Rational Performance Tester version iFix 01:
1. Upgrade from version 9.5, 10.0 or 10.1 to Rational Performance Tester version 10.2.
2. In Installation Manager choose Update and select version iFix 01.


Workarounds and Mitigations


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Change History

27 Dec 2022: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location


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Document Information

Modified date:
04 January 2022