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AUSCERT External Security Bulletin Redistribution
Security Bulletin: Information disclosure in WebSphere
Application Server Liberty (CVE-2016-2923)
30 June 2016
AusCERT Security Bulletin Summary
Product: IBM WebSphere Application Server Liberty
Operating System: AIX
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2016-2923
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Security Bulletin: Information disclosure in WebSphere Application Server
More support for:
WebSphere Application Server
AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS
There is an information disclosure vulnerability in IBM WebSphere Application
Server Liberty for any users of the JAX-RS API.
IBM WebSphere Application Server Liberty using JAX-RS API could allow a
remote attacker to obtain sensitive information, caused by the failure to set
the HTTPOnly flag. A remote attacker could exploit this vulnerability to
obtain sensitive information from the cookie.
CVSS Base Score: 5.3
CVSS Temporal Score: See
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
This vulnerability affects the following versions and releases of IBM
WebSphere Application Server Liberty for any user of the JAX-RS API
Version 8.5.5 Liberty
Version 8.5 Liberty
The recommended solution is to apply the interim fix, Fix Pack or PTF
containing APAR PI61936 for each named product as soon as practical.
For V18.104.22.168 through 22.214.171.124 WebSphere Application Server Liberty:
Upgrade to minimal fix pack levels as required by interim fix and then apply
Apply Fix Pack 126.96.36.199 or later (targeted to be available 24 June 2016).
Workarounds and Mitigations
Get Notified about Future Security Bulletins
to be notified of important product support alerts like this.
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z Security Portal to receive the latest critical System z security and
integrity service. If you are not subscribed, see the instructions on the
System z Security web site
Security and integrity APARs and associated fixes will be posted to this
portal. IBM suggests reviewing the CVSS scores and applying all security or
integrity fixes as soon as possible to minimize any potential risk.
Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
29 June 2016: 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.
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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