Security Bulletin: Vulnerability in Apache Log4j affects IBM SPSS Analytic Server (CVE-2021-44228)

Summary

There is a vulnerability in the version of Apache Log4j that was installed in IBM SPSS Analytic Server. This vulnerability has been addressed.

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: https://exchange.xforce.ibmcloud.com/vulnerabilities/214921 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

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by applying the following fixes.

Product|VRMF|APAR**_
_|_Fixes _**** **
—|—|—|—
IBM SPSS Analytic Server| 3.2.2.0| PH42787| 3.2.2.0 - IFIX
IBM SPSS Analytic Server| 3.3.0.0| PH42787| 3.3.0.0 - IFIX

Installation Instructions
-----------------------------------------------
1. Stop the Analytic Server service.

- For Hortonworks, stop Analytic Server from the Ambari console.
- For Cloudera, stop Analytic Server from the Cloudera Manager console.

Note: The default location of the “as_installation_path” folder is:

- HDP: /opt/ibm/spss/analyticserver/3.x
- CDH & CDP: /opt/cloudera/parcels/AnalyticServer

2. Backup and delete the old files in AS installation folder.

<as_installation_path>/lib
- log4j-api-2.13.3.jar
- log4j-core-2.13.3.jar

<as_installation_path>/ae_wlpserver/usr/servers/aeserver/apps/AE_BOOT.war/WEB-INF/lib
- log4j-api-2.13.3.jar
- log4j-core-2.13.3.jar

3. Copy the new files within zip package to AS installation folder on the Analytic Server Metastore and each Analytic Server node.
The files updated by Interim Fix are listed below.

<as_installation_path>/lib
- log4j-api-2.15.0.jar
- log4j-core-2.15.0.jar

<as_installation_path>/ae_wlpserver/usr/servers/aeserver/apps/AE_BOOT.war/WEB-INF/lib
- log4j-api-2.15.0.jar
- log4j-core-2.15.0.jar

4. Run the hdfsUpdate script.

- HDP: Refresh the Analytic Server service from the Ambari console.
- CDH & CDP: Refresh Analytic Server binaries from the Cloudera Manager console.

5. Start the Analytic Server service.

Note:
For /user/as_user/analytic-root/defaultASsubpath/classpath directory in HDFS, several log4j jar files are there and copied from hadoop cluster.
If they are updated, please repeat step 1 to 5.

Workarounds and Mitigations

None