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 for Linux, UNIX and Windows (includes Db2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 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. IBM X-Force ID: 188149.
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.
| Release | Fixed in fix pack | APAR | Download URL |
| V9.7 | TBD | IT34241 | Special Build for V9.7 FP11:
Windows 32-bit, x86 |
| V10.1 | TBD | IT34240 | Special Build for V10.1 FP6:
Windows 32-bit, x86 [Link will be provided as soon as it becomes available] |
| V10.5 | TBD | IT34239 | Special Build for V10.5 FP11: |
| V11.1 | v11.1.4FP6 | IT34238 |
Build for v11.1.4FP6: |
| V11.5 | 11.5.5.0 | IT34221 | Special Build for V11.5.5: |
Workarounds and Mitigations
None
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References
Acknowledgement
This vulnerability was reported to IBM by Hou JingYi (@hjy79425575) of Qihoo 360 CERT
Change History
23 March 2021: Added urls for 11.5
19 March 2021: Removed urls for 11.5
12 March 2021: Replaced urls for v11.5, 10.5, 10.1, and 9.7
10 March 2021: Replaced Special Build urls with the 11.1.4FP6 url
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
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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Document Information
Modified date:
13 April 2021
UID
ibm16370023