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AUSCERT External Security Bulletin Redistribution
ESB-2015.2724
Security Bulletin: HTTP response splitting attack in
WebSphere Application Server (CVE-2015-2017)
30 October 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM WebSphere Application Server
Publisher: IBM
Operating System: AIX
HP-UX
IBM i
Linux variants
Solaris
Windows
z/OS
Impact/Access: Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-2017
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21966837
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Security Bulletin: HTTP response splitting attack in WebSphere Application
Server (CVE-2015-2017)
Document information
More support for:
WebSphere Application Server
General
Software version:
6.1, 7.0, 8.0, 8.5, 8.5.5
Operating system(s):
AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS
Software edition:
Base, Developer, Express, Liberty, Network Deployment
Reference #:
1966837
Modified date:
2015-10-29
Security Bulletin
Summary
There is a vulnerability in IBM WebSphere Application Server that is used
by IBM WebSphere Portal that could allow an HTTP response splitting attack
in Channel.
Vulnerability Details
CVEID: CVE-2015-2017
DESCRIPTION: IBM WebSphere Portal is vulnerable to HTTP response
splitting attacks. A remote attacker could exploit this vulnerability
using specially-crafted URL to cause the server to return a split response,
once the URL is clicked. This would allow the attacker to perform further
attacks, such as Web cache poisoning, cross-site scripting, and possibly
obtain sensitive information.
CVSS Base Score: 5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/103991 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Affected Products and Versions
This vulnerability affects the following versions and releases of IBM
WebSphere Application Server
Version 8.5.5 Full Profile and Liberty Profile
Version 8.5 Full Profile and Liberty Profile
Version 8.0
Version 7.0
Version 6.1
Remediation/Fixes
The recommended solutions is to apply the interim fix, Fix Pack or PTF
containing APAR PI45266 for each named product as soon as practical.
For WebSphere Application Server:
For V8.5.0.0 through 8.5.5.7 Full Profile:
· Upgrade to minimal fix pack levels as required by interim fix and then
apply Interim Fix PI45266
- --OR--
· Apply Fix Pack 8.5.5.8 or later (targeted availability 11 December 2015).
For V8.5.0.0 through 8.5.5.7 Liberty Profile:
· Upgrade to a minimal fix pack levels as required by interim fix and
then apply Interim Fix PI45266
- --OR--
· Apply Fix Pack 8.5.5.8 or later (targeted availability 11 December 2015).
For V8.0 through 8.0.0.11:
· Upgrade to a minimal fix pack levels as required by interim fix and
then apply Interim Fix PI45266
- --OR--
· Apply Fix Pack 8.0.0.12 or later (targeted availability 02 February 2016).
For V7.0.0.0 through 7.0.0.37:
· Upgrade to a minimal fix pack levels as required by interim fix and
then apply Interim Fix PI45266
- --OR--
· Apply Fix Pack 7.0.0.39 or later (targeted availability 02 November 2015).
For V6.1.0.0 through 6.1.0.47:
· Upgrade to Fix Pack 6.1.0.47 and then apply Interim Fix PI45266
For unsupported versions IBM recommends upgrading to a fixed, supported
version of the product.
Workarounds and Mitigations
none
Get Notified about Future Security Bulletins
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alerts like this.
Important note
IBM strongly suggests that all System z customers be subscribed to the
System 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.
References
Complete CVSS v2 Guide
On-line Calculator v2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
29 October 2015: 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.
Cross reference information
Segment Product Component Platform Version Edition
Application Servers WebSphere Application Server Hypervisor Edition
Application Servers WebSphere Application Server Liberty Core
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