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AUSCERT External Security Bulletin Redistribution
ESB-2021.1387
IBM DB2 Affected by Java Vulnerability
23 April 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: db2
Publisher: IBM
Operating System: AIX
Linux variants
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-27221
Reference: ESB-2021.1139
ESB-2021.0914
ESB-2021.0811
ESB-2021.0562
Original Bulletin:
https://www.ibm.com/support/pages/node/6446277
- --------------------------BEGIN INCLUDED TEXT--------------------
A vulnerability in IBM Runtime Environments Java™ Technology Edition Versions
affects IBM Db2. (January 2021 CPU)
Document Information
Document number : 6446277
Modified date : 22 April 2021
Product : DB2 for Linux- UNIX and Windows
Software version : 9.7, 10.1, 10.5, 11.1, 11.5
Operating system(s): Linux
AIX
Summary
There are multiple vulnerabilities in IBM Runtime Environments Java Technology
Edition, Versions 7.0.10.55 and earlier, 7.1.4.55 and earlier, 8.0.6.0 and
earlier used by IBM Db2. These issues were disclosed as part of the IBM SDKs
Java Technology Edition updates in Jan 2021.
Vulnerability Details
CVEID: CVE-2020-27221
DESCRIPTION: Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when
the virtual machine or JNI natives are converting from UTF-8 characters to
platform encoding. By sending an overly long string, a remote attacker could
overflow a buffer and execute arbitrary code on the system or cause the
application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
195353 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
All product versions on Linux and AIX are impacted. Windows is not impacted.
+--------------------+----------+
|Affected Product(s) |Version(s)|
+--------------------+----------+
|DB2 |9.7.x |
+--------------------+----------+
|DB2 |10.1.x |
+--------------------+----------+
|DB2 |10.5.x |
+--------------------+----------+
|DB2 |11.1.x |
+--------------------+----------+
|DB2 |11.5.x |
+--------------------+----------+
Remediation/Fixes
The recommended solution is to apply the appropriate fix for this
vulnerability.
The fix for this vulnerability is in the latest version of IBM JDK. Customers
running any vulnerable fixpack level of an affected Program can download the
latest version of IBM JDK from Fix Central .
Affected IBM SDKs Java Technology Edition, Versions :
o 7.0.10.75 and earlier
o 7.1.4.75 and earlier
o 8.0.6.20 and earlier
o Earlier releases (6, 5.0, 1.4.2, 1.3.1, 1.2.2 etc.) may also be affected,
but they are no longer supported.
Fixes for applicable vulnerabilities are included in IBM SDKs Java Technology
Edition, Versions :
o 7.0.10.80
o 7.1.4.80
o 8.0.6.25
HP is now shipping their JDK fixes twice a year, hence there is no fix
available for HP-UX. The bulletin will be updated when it becomes available.
Refer to the table below to determine the IBM JDK level that contains the fix.
Then follow the instructions below to perform the JDK installation.
+----------------------+------------------------------------------+
|Db2 Release |Fixed IBM Release |
+----------------------+------------------------------------------+
|v9.7.x |7.0.10.80 or later |
+----------------------+------------------------------------------+
|V10.1.x |7.0.10.80 or later |
+----------------------+------------------------------------------+
|V10.5.x |7.0.10.80 or later |
+----------------------+------------------------------------------+
|V11.1.x |8.0.6.25 or later |
+----------------------+------------------------------------------+
|V11.5.x |8.0.6.25 or later |
+----------------------+------------------------------------------+
Instructions for IBM JDK Installation can be found here:
http://www.ibm.com/support/docview.wssuid=swg27050993
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Complete CVSS v3 Guide
On-line Calculator v3
Off
Acknowledgement
Change History
22 Apr 2021: Initial Publication
Document Location
Worldwide
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