Security Bulletin: Due to use of Apache Log4j, OmniFind Text Search Server for DB2 for i is vulnerable to arbitrary code execution (CVE-2021-4104)

Security Bulletin

Summary

There is a vulnerability in Apache Log4j (CVE-2021-4104) as described in the vulnerability details section. Apache Log4j v1 is used by OmniFind Text Search Server for DB2 for i for generating logs and diagnostic traces in some of its components. IBM has addressed the vulnerability in OmniFind Text Search Server for DB2 for i by removing Apache Log4j.

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)
OmniFind Text Search Server for DB2 for i	V1R6M0 V1R5M0 V1R4M0 V1R3M0

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now.

The issue can be fixed by applying PTFs to IBM i. Releases V1R6M0(7.5), V1R5M0(7.4), V1R4M0(7.3), and V1R3M0(7.2) of OmniFind Text Search Server for DB2 for i will be fixed.

The IBM i PTF numbers containing the fix for the CVE:

OmniFind Text Search Server for DB2 for i Release	IBM i Release	PTF Number
V1R6M0	7.5	SI78636 SI78665 SI78673
V1R5M0	7.4	SI78753 SI78754 SI78755
V1R4M0	7.3	SI78756 SI78757 SI78758
V1R3M0	7.2	SI78751 SI78759 SI78760 SI78761

https://www.ibm.com/support/fixcentral

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Acknowledgement

Change History

09 March 2022: Initial Publication
06 May 2022: Updated to include IBM i Release 7.5 (V1R6M0) fix information

*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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: Due to use of Apache Log4j, OmniFind Text Search Server for DB2 for i is vulnerable to arbitrary code execution (CVE-2021-4104)