Fix (APAR): PH42728 Status: Fix Release: 8.5.5.20,8.5.5.19,8.5.5.18,8.5.5.17,8.5.5.16,8.5.5.15,8.5.5.14,8.5.5.13,8.5.5.12,8.5.5.11 Operating System: AIX,HP-UX,IBM i,Linux,Solaris,Windows,z/OS Supersedes Fixes: PH37034 PI97162 CMVC Defect: xxxxxx Byte size of APAR: 9020471 Date: 2021-12-12 Abstract: Vulnerability in Apache Log4j affects WebSphere Application Server (CVE-2021-44228 CVSS 9.8) Description/symptom of problem: PH42728 resolves the following problem: ERROR DESCRIPTION: Vulnerability in Apache Log4j affects WebSphere Application Server (CVE-2021-44228 CVSS 9.8) PROBLEM SUMMARY: Confidential for CVE-2021-44228 CVSS 9.8 PROBLEM CONCLUSION: Confidential for CVE-2021-44228 CVSS 9.8 Directions to apply fix: Fix applies to Editions: Release 8.5 _x_ Application Server (Express or BASE) _x_ Network Deployment (ND) __ Liberty Core __ Edge Components _x_ Developer Install Fix to all WebSphere installations unless special instructions are included below. Special Instructions: IMPORTANT If the UDDI Registry Application is running on the WebSphere Application Server, then after applying the Interim Fix PH42728, redeploy the UDDI Registry Application. NOTE: The user must: * Logged in with the same authority level when unpacking a fix, fix pack or refresh pack. * Be at V1.4.3 or newer of the Installation Manager. Certain iFixes may require a newer version of the Installation Manager and the Installation Manager will inform you during the installation process if a newer version is required. The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to apply the iFixes. http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp. Shutdown WebSphere Application Server before applying the iFixes. Restart WebSphere Application Server after applying the iFixes. Directions to remove fix: The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to remove the iFixes. http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp. Shutdown WebSphere Application Server before removing the iFixes. Restart WebSphere Application Server after removing the iFixes. Directions to re-apply fix: 1) Shutdown WebSphere Application Server. 2) Follow the Fix instructions to apply the fix. 3) Restart WebSphere Application Server. Additional Information: