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AUSCERT External Security Bulletin Redistribution
ESB-2020.2256.3
IBM Db2 could allow a local user to obtain sensitive
information using a race condition of a symbolic link
8 December 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Db2
Publisher: IBM
Operating System: AIX
Linux variants
Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-4386
Original Bulletin:
https://www.ibm.com/support/pages/node/6242342
Revision History: December 8 2020: Vendor added URLs for updates to advisory
October 12 2020: Linux/Unix images updated V9.7
July 1 2020: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
IBM Db2 is vulnerable to an information disclosure. (CVE-2020-4386)
Document Information
Document number : 6242342
Modified date : 07 December 2020
Product : DB2 for Linux- UNIX and Windows
Software version : 9.7,10.1,10.5,11.1,11.5
Operating system(s): AIX
Linux
Windows
Security Bulletin
Summary
IBM Db2 could allow a local user to obtain sensitive information using a race
condition of a symbolic link.
Vulnerability Details
CVEID: CVE-2020-4386
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server)
could allow a local user to obtain sensitive information using a race condition
of a symbolic link.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
179268 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
Affected Products and Versions
All fix pack levels of IBM Db2 V9.7, V10.1, V10.5, V11.1, and V11.5 editions on
all platforms are 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 GA. They can be applied to any affected fixpack level of the
appropriate release to remediate this vulnerability.
+-------+----------------+-------+--------------------------------------------+
|Release|Fixed in fix |APAR |Download URL |
| |pack | | |
+-------+----------------+-------+--------------------------------------------+
|V9.7 |TBD |IT32740|Special Build for V9.7 FP11: |
| | | | |
| | | |AIX 64-bit |
| | | |HP-UX 64-bit |
| | | |Linux 32-bit, x86-32 |
| | | |Linux 64-bit, x86-64 |
| | | |Linux 64-bit, POWER big endian |
| | | |Linux 64-bit, System z, System z9 or zSeries|
| | | |Solaris 64-bit, SPARC |
| | | |Solaris 64-bit, x86-64 |
| | | |Windows 32-bit, x86 |
| | | |Windows 64-bit, x86 |
+-------+----------------+-------+--------------------------------------------+
|V10.1 |TBD |IT32739|Special Build for V10.1 FP6: |
| | | | |
| | | |AIX 64-bit |
| | | |HP-UX 64-bit |
| | | |Linux 32-bit, x86-32 |
| | | |Linux 64-bit, x86-64 |
| | | |Linux 64-bit, POWER big endian |
| | | |Linux 64-bit, System z, System z9 or zSeries|
| | | |Solaris 64-bit, SPARC |
| | | |Solaris 64-bit, x86-64 |
| | | |Windows 32-bit, x86 |
| | | |Windows 64-bit, x86 |
+-------+----------------+-------+--------------------------------------------+
|V10.5 |TBD |IT32738|Special Build for V10.5 FP11: |
| | | | |
| | | |AIX 64-bit |
| | | |HP-UX 64-bit |
| | | |Linux 32-bit, x86-32 |
| | | |Linux 64-bit, x86-64 |
| | | |Linux 64-bit, POWER big endian |
| | | |Linux 64-bit, POWER little endian |
| | | |Linux 64-bit, System z, System z9 or zSeries|
| | | |Solaris 64-bit, SPARC |
| | | |Solaris 64-bit, x86-64 |
| | | |Windows 32-bit, x86 |
| | | |Windows 64-bit, x86 |
| | | |Inspur |
+-------+----------------+-------+--------------------------------------------+
|V11.1 |TBD |IT32737|Special Build for V11.1 FP5: |
| | | | |
| | | |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 |TBD |IT32714|Build for V11.5.4 GA: |
| | | | |
| | | |https://www.ibm.com/support/pages/node/ |
| | | |6241724 |
+-------+----------------+-------+--------------------------------------------+
Workarounds and Mitigations
None
Acknowledgement
The vulnerability was reported to IBM by Eddie Zhu, BEIJING DBSEC TECHNOLOGY
CO., LTD.
Change History
7 December 2020: Update Windows 64-bit image for 9.7
26 November 2020: Windows images for 9.7 refreshed.
9 October 2020: Linux/Unix images for 9.7 refreshed
18 August 2020: Windows images for 9.7 refreshed
30 June 2020: Initial Publication
Document Location
Worldwide
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