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AUSCERT External Security Bulletin Redistribution
ESB-2020.2253
Multiple buffer overflow vulnerabilities exist in IBM Db2
leading to privilege escalation (CVE-2020-4204)
1 July 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Db2
Publisher: IBM
Operating System: AIX
Linux variants
Windows
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-4204
Reference: ESB-2020.2161
ESB-2020.0845
ESB-2020.0814
ESB-2020.0591.3
Original Bulletin:
https://www.ibm.com/support/pages/node/2875875
- --------------------------BEGIN INCLUDED TEXT--------------------
Summary
Multiple buffer overflow vulnerabilities exist in IBM(R) Db2(R) leading to
privilege escalation from an authenticated local user to root.
Vulnerability Details
CVEID: CVE-2020-4204
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect
Server) is vulnerable to a buffer overflow, caused by improper bounds checking
which could allow a local attacker to execute arbitrary code on the system with
root privileges.
CVSS Base score: 8.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
174960 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/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
all platforms are affected.
Remediation/Fixes
The fix for Db2 V10.5 is in V10.5.0.11, available for download from Fix Central
.
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 FP10, 11.1 FP5,
and V11.5 GA. They can be applied to any affected fixpack level of the
appropriate release to remediate this vulnerability.
Db2 9.7 Windows images published before June 29, 2020 have an issue where the
Db2 installer may fail to initialize due to a signature verification
error. Customers that have downloaded a special build before June 29,
2020 should delete the image and re-download with the updated links below.
+---------------+----------+----------+--------------------------------------------------------------------+
|Release |Fixed in |APAR |Download URL |
| |fix pack | | |
+---------------+----------+----------+--------------------------------------------------------------------+
|V9.7 |TBD |IT31641 |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(TM) big endian |
| | | |Linux 64-bit, System z(R), System z9(R) or zSeries(R) |
| | | |Solaris 64-bit, SPARC |
| | | |Solaris 64-bit, x86-64 |
| | | |Windows 32-bit, x86 |
| | | |Windows 64-bit, x86 |
+---------------+----------+----------+--------------------------------------------------------------------+
|V10.1 |TBD |IT31640 |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(TM) big endian |
| | | |Linux 64-bit, System z(R), System z9(R) or zSeries(R) |
| | | |Solaris 64-bit, SPARC |
| | | |Solaris 64-bit, x86-64 |
| | | |Windows 32-bit, x86 |
| | | |Windows 64-bit, x86 |
+---------------+----------+----------+--------------------------------------------------------------------+
|V10.5 |FP11 |IT31639 |https://www.ibm.com/support/pages/node/3500079 |
+---------------+----------+----------+--------------------------------------------------------------------+
|V11.1 |TBD |IT31638 |Special Build for V11.1 FP5: |
| | | | |
| | | |AIX 64-bit |
| | | |Linux 32-bit, x86-32 |
| | | |Linux 64-bit, x86-64 |
| | | |Linux 64-bit, POWER(TM) little endian |
| | | |Linux 64-bit, System z(R), System z9(R) or zSeries(R) |
| | | |Windows 32-bit, x86 |
| | | |Windows 64-bit, x86 |
+---------------+----------+----------+--------------------------------------------------------------------+
|V11.5 |TBD |IT31637 |Special Build for V11.5 GA: |
| | | | |
| | | |AIX 64-bit |
| | | |Linux 32-bit, x86-32 |
| | | |Linux 64-bit, x86-64 |
| | | |Linux 64-bit, POWER(TM) little endian |
| | | |Linux 64-bit, System z(R), System z9(R) or zSeries(R) |
| | | |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
Off
Related Information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
18 Feb 2020: Initial Publication
02 Mar 2020: Added comment that V10.5 Windows special build requires VS 2013
libraries to be installed.
05 Mar 2020: Added the affected software editions
05 Mar 2020: Corrected special build links for all platforms
06 Mar 2020: Updated 10.5 version with a link to 10.5 FP11 image.
12 Mar 2020: Added links to V9.7 Windows 32-bit and 64-bit images.
29 June 2020: Updated links to V9.7 Windows 32-bit and 64-bit images to resolve
an installer issue.
29 June 2020: Added links to V10.1 Windows 32-bit and 64-bit images.
*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.
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