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

                              ESB-2020.2263.2
    IBM Db2 is vulnerable to a denial of service attack (CVE-2020-4420)
                              12 October 2020

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

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

Product:           Db2
Publisher:         IBM
Operating System:  AIX
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-4420  

Original Bulletin: 
   https://www.ibm.com/support/pages/node/6242362

Revision History:  October 12 2020: Linux/Unix images updated for V9.7
                   July     1 2020: Initial Release

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

IBM Db2 is vulnerable to a denial of service attack (CVE-2020-4420)

Security Bulletin

Summary

IBM Db2 could allow an unauthenticated attacker to cause a denial of service
due to a hang in the execution of a terminate command.

Vulnerability Details

CVEID: CVE-2020-4420
DESCRIPTION: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server)
could allow an unauthenticated attacker to cause a denial of service due a hang
in the execution of a terminate command.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
180076 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 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             |IT32822|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                         |
|       |                |       |                                            |
|       |                |       |Note: Windows images updated 2020/08/18     |
|       |                |       |                                            |
|       |                |       |Linux/Unix images updated 2020/10/09        |
+-------+----------------+-------+--------------------------------------------+
|V10.1  |TBD             |IT32821|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             |IT32362|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             |IT32287|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             |IT32363|Build for V11.5.4 GA:                       |
|       |                |       |                                            |
|       |                |       |https://www.ibm.com/support/pages/node/     |
|       |                |       |6241724                                     |
+-------+----------------+-------+--------------------------------------------+

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

- --------------------------END INCLUDED TEXT--------------------

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