What is CVE-2021-28167?

CVE-2021-28167 is a vulnerability in Eclipse Openj9 version 0.25.0 that allows the JVM to pre-resolve certain constant pool entries, enabling a user to call static methods or access static members without running the class initialization method.

How does CVE-2021-28167 impact Eclipse Openj9?

CVE-2021-28167 allows users to bypass class initialization methods and call static methods or access static members directly, resulting in potential unauthorized access or privilege escalation.

What is the severity of CVE-2021-28167?

CVE-2021-28167 has a severity rating of 6.5 (Medium).

How can I mitigate CVE-2021-28167?

To mitigate CVE-2021-28167, update Eclipse Openj9 to a version beyond 0.25.0 that contains the necessary security patches.

Where can I find more information about CVE-2021-28167?

More information about CVE-2021-28167 can be found at the following reference: https://github.com/eclipse/openj9/issues/12016

Vulnerability/
CVE-2021-28167

medium

6.5

CWE

909

21/4/2021

3/8/2024

CVE-2021-28167

First published: Wed Apr 21 2021(Updated: )

Eclipse Openj9 could allow a remote attacker to bypass security restrictions, caused by a flaw in the jdk.internal.reflect.ConstantPool API. By sending a specially-crafted request, an attacker could exploit this vulnerability to call static methods or access static members without running the class initialization method.

Credit: emo@eclipse.org emo@eclipse.org

Affected Software	Affected Version	How to fix
Eclipse Openj9	<=0.25.0
IBM Cognos Analytics	<=12.0.0-12.0.1
IBM Cognos Analytics	<=11.2.0-11.2.4 FP2
IBM Cognos Analytics	<=11.1.1-11.1.7 FP7

Remedy

https://github.com/eclipse/openj9/issues/12016

Never miss a vulnerability like this again

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

IBM-7123154

Frequently Asked Questions

What is CVE-2021-28167?
CVE-2021-28167 is a vulnerability in Eclipse Openj9 version 0.25.0 that allows the JVM to pre-resolve certain constant pool entries, enabling a user to call static methods or access static members without running the class initialization method.
How does CVE-2021-28167 impact Eclipse Openj9?
CVE-2021-28167 allows users to bypass class initialization methods and call static methods or access static members directly, resulting in potential unauthorized access or privilege escalation.
What is the severity of CVE-2021-28167?
CVE-2021-28167 has a severity rating of 6.5 (Medium).
How can I mitigate CVE-2021-28167?
To mitigate CVE-2021-28167, update Eclipse Openj9 to a version beyond 0.25.0 that contains the necessary security patches.
Where can I find more information about CVE-2021-28167?
More information about CVE-2021-28167 can be found at the following reference: https://github.com/eclipse/openj9/issues/12016

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version/ibm cognos analytics/11.2.0-11.2.4 fp2
version/ibm cognos analytics/11.1.1-11.1.7 fp7

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