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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0814
         Multiple buffer overflow vulnerabilities exist in IBM Db2
              leading to privilege escalation (CVE-2020-4204)
                               5 March 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Db2
Publisher:         IBM
Operating System:  AIX
                   Windows
                   Linux variants
Impact/Access:     Root Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-4204  

Reference:         ESB-2020.0591.2

Original Bulletin: 
   https://www.ibm.com/support/pages/node/2875875

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: Multiple buffer overflow vulnerabilities exist in IBM(R) Db2(R)
leading to privilege escalation (CVE-2020-4204).

Security Bulletin


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

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.
+---------------+----------+----------+--------------------------------------------------------------------+
|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          |TBD       |IT31639   |Special Build for V10.5 FP10:                                       |
|               |          |          |                                                                    |
|               |          |          |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, POWER(TM) little 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*                                                |
|               |          |          |Inspur                                                              |
+---------------+----------+----------+--------------------------------------------------------------------+
|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                                                 |
+---------------+----------+----------+--------------------------------------------------------------------+

 Note: Windows 32-bit and 64-bit links for Db2 V9.7 and V10.1 will be published
by March, 2020.

* V10.5 Windows special build requires VS 2013 libraries to be installed and
would cause db2start to fail otherwise. These libraries can be downloaded from
here.


Workarounds and Mitigations

None

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