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Security Bulletin: Log4j vulnerability (CVE-2021-4104) affects IBM Netezza Analytics and IBM Netezza Analytics for NPS

Security Bulletin


Summary

IBM Netezza Analytics and IBM Netezza Analytics for NPS (for mapreduce cartridge) use Log4j version 1.x and are affected by CVE: Log4j 1.x (CVE-2021-4104) and NOT CVE-2021-44228. This bulletin provides a way to re-enable the mapreduce cartridge on system if it was disabled earlier.

Vulnerability Details

CVEID:   CVE-2021-4104
DESCRIPTION:   Apache Log4j could allow a remote attacker to execute arbitrary code on the system, caused by the deserialization of untrusted data when the attacker has write access to the Log4j configuration. If the deployed application is configured to use JMSAppender, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215048 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)

Version(s)

IBM Netezza Analytics for NPS

All versions <= 11.2.21

IBM Netezza Analytics

All versions <= 3.3.9


Remediation/Fixes

A new version of IBM Netezza Analytics and IBM Netezza Analytics for NPS is planned to be released later to address vulnerability CVE-2021-4104

Workarounds and Mitigations

Case 1 : If workaround is applied on host

If mitigation steps provided earlier in the bulletin are applied on any system to disable the mapreduce cartridge, they can be reverted by re-enabling the mapreduce cartridge on host. 

Follow the below steps to re-enable mapreduce cartridge functionality for Red Hat Enterprise Linux (RHEL) on following platforms :

PureData System for Analytics N3001
PureData System for Analytics N200x
IBM Netezza Performance Server using INZA
Netezza Performance Server as-a-Service on Microsoft Azure (fully managed service)

Note : Customers with IBM Netezza Performance Server and not using INZA are not affected by this vulnerability. 

 

Step 1 :

Log on to the host with nz user and check if mapreduce cartridge was uninstalled or not by executing below command :

nzcm --installed | grep mapreduce

Example :
$ nzcm --installed | grep mapreduce
 

If grep command yields no output, mapreduce is currently not installed on host.

 

Step 2 :

Follow below steps to install and register the mapreduce cartridge again on host :

To install :  nzcm -i mapreduce 

Example: 

$ nzcm -i mapreduce

Following cartridges will be installed:
        mapreduce

Do you want to continue? (yes/no) yes

Installing: /nz/var/nzcm/nzcmrepo/mapreduce-11.2.21.98.nzc
mapreduce (11.2.21.98) installed successfully.

Cartridge 'mapreduce-11.2.21.98' installed.

Log file: /nz/var/log/nzcm.20211216.06_34_50.25936.log

 

To register : nzcm -r mapreduce

Example : 

$ nzcm -r mapreduce

Registering: mapreduce
mapreduce was successfully registered on "INZA".

Registration of mapreduce completed on 'INZA'.

Log file: /nz/var/log/nzcm.20211216.06_34_58.26037.log

 

Step 3 :

Verify if mapreduce is installed and registered successfully using following command :

nzcm --installed | grep mapreduce

Example :
nzcm --installed | grep mapreduce
 mapreduce                                    | 11.2.21.98 |

nzcm --registered | grep mapreduce

Example :

$ nzcm --registered | grep mapreduce
 mapreduce                                    | 11.2.21.98 | INZA      | nz    | 2021-12-16 06:35:01.798130 |

 

Case 2 : If INZA 11.2.22 patch is applied on host

If INZA 11.2.22 patch released on December 15th, 2021 is applied on host, please install an older version of INZA v11.2.21 (Fix_Central_Link) to re-enable mapreduce functionality.

Get Notified about Future Security Bulletins

References

Off

Change History

17 Dec 2021: Original 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.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document Location

Worldwide

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Document Information

Modified date:
17 December 2021

UID

ibm16527820