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Security Bulletin: IBM® Db2® could allow a local authenticated attacker to execute arbitrary code on the system, caused by DLL search order hijacking vulnerability in Microsoft Windows client. (CVE-2020-4739)

Security Bulletin


Summary

IBM DB2 on Windows could allow a local authenticated attacker to execute arbitrary code on the system, caused by DLL search order hijacking vulnerability in Microsoft Windows client. By placing a specially crafted file in a compromised folder, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Vulnerability Details

CVEID:   CVE-2020-4739
DESCRIPTION:   IBM DB2 Accessories Suite for Linux, UNIX, and Windows, DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) could allow a local authenticated attacker to execute arbitrary code on the system, caused by DLL search order hijacking vulnerability in Microsoft Windows client. By placing a specially crafted file in a compromised folder, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/188149 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

Affected Products and Versions

All fix pack levels of IBM Db2 V9.7, V10.1, V10.5, V11.1, and V11.5 editions on Windows are affected.  Linux and Unix are not affected.

Remediation/Fixes

Customers running any vulnerable fixpack level of an affected Program 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: V9.7 FP11, V10.1 FP6, V10.5 FP11, 11.1 FP5, and V11.5.4. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.


ReleaseFixed in fix packAPARDownload URL
V9.7TBDIT34241Special Build for V9.7 FP11:

Windows 32-bit, x86
Windows 64-bit, x86


V10.1TBDIT34240Special Build for V10.1 FP6:

Windows 32-bit, x86
Windows 64-bit, x86

V10.5TBDIT34239Special Build for V10.5 FP11:

Windows 32-bit, x86
Windows 64-bit, x86

V11.1TBDIT34238Special Build for V11.1 FP5:

Windows 32-bit, x86
Windows 64-bit, x86

V11.511.5.5.0IT34221Build for V11.5.5 GA:

https://www.ibm.com/support/pages/node/6368787




Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

This vulnerability was reported to IBM by Hou JingYi (@hjy79425575) of Qihoo 360 CERT

Change History

10 December 2020:  URL for 10.5 Windows 64-bit updated
7 Dec 2020: URL for 9.7 Windows-64 updated
30 Nov 2020: Update URL for DB2 10.5
26 Nov 2020: URLs added for DB2 9.7
19 Nov 2020: URLs added for DB2 10.1
18 Nov 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

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 February 2021

UID

ibm16370023