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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.0401
          Security Bulletin: Vulnerability in Apache CXF affects
               WebSphere Application Server (CVE-2019-12406)
                              4 February 2020

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

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

Product:           WebSphere Application Server
                   WebSphere Application Server Liberty
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   IBM i
                   Linux variants
                   Mac OS
                   Solaris
                   Windows
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-12406  

Reference:         ESB-2019.4157

Original Bulletin: 
   https://www.ibm.com/support/pages/node/1288774

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

Vulnerability in Apache CXF affects WebSphere Application Server
(CVE-2019-12406)

Security Bulletin

Summary

There is a denial of service in the Apache CXF library used by WebSphere
Application Server. This has been addressed.

Vulnerability Details

CVEID: CVE-2019-12406
DESCRIPTION: Apache CXF before 3.3.4 and 3.2.11 does not restrict the number of
message attachments present in a given message. This leaves open the
possibility of a denial of service type attack, where a malicious user crafts a
message containing a very large number of message attachments. From the 3.3.4
and 3.2.11 releases, a default limit of 50 message attachments is enforced.
This is configurable via the message property "attachment-max-count".
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
170974 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

+------------------------------------+-------------------+
|Affected Product(s)                 |Version(s)         |
+------------------------------------+-------------------+
|WebSphere Application Server Liberty|17.0.0.3 - 20.0.0.1|
+------------------------------------+-------------------+
|WebSphere Application Server        |9.0                |
+------------------------------------+-------------------+

Remediation/Fixes

The recommended solution is to apply the interim fix, Fix Pack or PTF
containing APAR PH19989 for each named product as soon as practical.

For WebSphere Application Server and WebSphere Application Server Hypervisor
Edition:

For Liberty 17.0.0.3-20.0.0.1 using jaxrs-2.0 or jaxrs-2.1 or jaxws-2.2
features:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH19989
- --OR--
. Apply Liberty Fix Pack 20.0.0.2 or later (targeted availability 1Q2020).

For V9.0.0.0 through 9.0.5.2:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH19989
- --OR--
. Apply Fix Pack 9.0.5.3 or later (targeted availability 1Q2020).

Additional interim fixes may be available and linked off the interim fix
download page.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

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