Log4j 2 Vulnerability

A high severity vulnerability (CVE-2021-44228, CVSSv3 10.0) impacting multiple versions of the Apache Log4j 2 utility was disclosed publicly on December 9, 2021. The vulnerability allows for unauthenticated remote code execution (RCE). This vulnerability exists in Apache Log4j 2 versions 2.0 to 2.14.1. According to the developer, version 1.x of Log4j is not susceptible to this vulnerability.

Log4j 2 is an open-source Java logging library developed by the Apache Foundation. Log4j 2 is widely used in many applications as a dependency. These include numerous cloud services as well as enterprise applications such as Dualshield. 

Generally speaking, DualShield is not susceptible to this vulnerability.

1. DualShield 5.x, DualShield 6.1, 6.2, 6.3 includes Log4j 1.x which is not susceptible to this vulnerability unless JMS Appender is used. DualShield does not use JMS Appender. 

2. DualShield 6.4 includes Log4j 2.13.3. However, DualShield 6.4 includes JRE 8u203 which is not susceptible to Remote Code Execution (RCE).

Actions recommended to DualShield customers

In general, you should always upgrade your DualShield to the latest update as soon as possible. However, if you are running DualShield 6.4 and cannot upgrade to the latest update, then you should add "-Dlog4j2.formatMsgNoLookups=true" into the JAVA settings and restart the DualShield service after the change. 

Click here for instructions on how to change JAVA settings in the DualShield platform.

Actions being taken by the DualShield team

A new update of DualShield has been produced and released, DualShield 6.4.20.1215.

In this update, we have made the following changes:

1. Log4j is completely removed from the SSO server (the frontend) in the DualShield platform

2. Log4j in the authentication server (the backend) in the DualShield platform has been upgraded to Log4j 2.16

3. Log4j in the certificate server (frontend) has been upgraded to Log4j 2.16