Security Bulletin: IBM® Db2® is vulnerable to privilege escalation (CVE-2020-4230).

Security Bulletin

Summary

IBM Db2 is vulnerable to a priviledge escalation. An authenticated local attacker with special permissions can execute specially crafted Db2 commands to modify the owner of stored procedures to SYSIBM, causing a privilege escalation.

Vulnerability Details

CVEID: CVE-2020-4230
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) is vulnerable to an escalation of privilege when an authenticated local attacker with special permissions executes specially crafted Db2 commands.
CVSS Base score: 6.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/175212 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

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

Remediation/Fixes

Customers running any vulnerable fixpack level of an affected Program, V11.1, 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 FP5 V11.5 GA. 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	v11.1.4FP6	IT31604	Build for v11.1.4FP6 https://www.ibm.com/support/pages/node/6427871
V11.5	TBD	IT31481	Special Build for V11.5 GA: 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® Windows 32-bit, x86 Windows 64-bit, x86

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Acknowledgement

Change History

10 March 2021: Replaced Special Build urls with the 11.1.4FP6 url
18 Feb 2020: 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

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: IBM® Db2® is vulnerable to privilege escalation (CVE-2020-4230).