ESB-2017.2928 - [Win][Linux][IBM i][HP-UX][Solaris][AIX] IBM WebSphere Application Server Liberty: Access confidential data - Existing account 2017-11-16

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2928
          Security Bulletin: Information disclosure in WebSphere
                Application Server Liberty (CVE-2013-6440)
                             16 November 2017

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

Product:           IBM WebSphere Application Server Liberty
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   IBM i
                   Linux variants
                   Solaris
                   Windows
                   z/OS
Impact/Access:     Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-6440  

Reference:         ESB-2014.0270
                   ESB-2014.0219
                   ESB-2014.0196

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22010415

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Security Bulletin: Information disclosure in WebSphere Application Server
Liberty (CVE-2013-6440)

Document information

More support for: WebSphere Application Server
Liberty

Software version: Not Applicable

Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS

Software edition: Liberty

Reference #: 2010415

Modified date: 14 November 2017

Security Bulletin

Summary

There is an information disclosure due to an XML external entity (XXE)
vulnerability when using the OpenSAML features in WebSphere Application Server
Liberty.

Vulnerability Details

CVEID: CVE-2013-6440
DESCRIPTION: OpenSAML could allow a remote authenticated attacker to obtain
sensitive information, caused by an error when parsing XML entities. By
persuading a victim to open a specially-crafted XML document containing
external entity references, an attacker could exploit this vulnerability to
obtain sensitive information.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
89714 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM WebSphere
Application Server:

  o Liberty using samlWeb-2.0 feature
  o Liberty using wsSecuritySaml-1.1 feature

Remediation/Fixes

The recommended solution is to apply the interim fix or Fix Pack contain APAR
PI89102 for each named product as soon as practical.

For WebSphere Application Server Liberty using the OpenSAML features:
. Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PI89102  
- --OR--
. Apply Liberty Fix Pack 17.0.0.4 or later (targeted availability 21 December
2017).

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support
alerts like this.

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

14 November 2017: original document published

*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.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF
ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY
ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

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