CVE-2021-38931: IBM® Db2® is vulnerable to an information disclosure as a result of a connected user having indirect read access to a table where they are not authorized to select from. (CVE-2021-38931)

Summary

Db2 is vulnerable to an information disclosure as a result of a connected user having indirect read access to a table where they are not authorized to select from.

Vulnerability Details

CVEID: CVE-2021-38931
DESCRIPTION: IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) is vulnerable to an information disclosure as a result of a connected user having indirect read access to a table where they are not authorized to select from.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/210418 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

All fix pack levels of IBM Db2 V11.1, and V11.5 editions on all platforms are affected.

IBM Db2 V10.5, V10.1 and V9.7 are not impacted.

Remediation/Fixes

Customers running any vulnerable fixpack level of an affected Program, v11.1 and V11.5, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent fixpack level for each impacted release: V11.1.4 FP6, and V11.5.6. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.

Release

Fixed in fix pack

APAR

Download URL

V11.1

TBD

IT38558

Special Build for V11.1.4 FP6:

AIX 64-bit
Linux 32-bit, x86-32
Linux 64-bit, x86-64
Linux 64-bit, POWER™ little endian
Linux 64-bit, System z®, System z9® or zSeries®
Solaris 64-bit, SPARC
Windows 32-bit, x86
Windows 64-bit, x86

V11.5

11.5.7

IT38558

https://www.ibm.com/support/pages/node/6524304

Workarounds and Mitigations

Implementation of row and column access control (RCAC) can be used to resolve this vulnerability.
See here for details.

References

Off

Acknowledgement

IBM would like to thank Yuriy Symyuta and Max Nielsen at Spar Nord Bank for reporting this issue.

Change History

08 Dec 2021: Initial 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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