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Security Bulletin: HTTP Response Splitting in WebSphere Application Server (CVE-2016-0359)

Security Bulletin


Summary

There is a potential HTTP response splitting vulnerability in IBM WebSphere Application Server.

Vulnerability Details

CVEID: CVE-2016-0359
DESCRIPTION:
IBM WebSphere Application Server 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: 6.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111929 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
  • Version 8.5 Full Profile and Liberty
  • Version 8.0
  • Version 7.0

Remediation/Fixes

The recommended solution is to apply the interim fix, Fix Pack or PTF containing APAR PI58918 for each named product as soon as practical.

For WebSphere Application Server:

For V8.5.0.0 through 8.5.5.9 Liberty:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI58918
--OR--
· Apply Liberty Fix Pack 16.0.0.2 or later.

For V8.5.0.0 through 8.5.5.9 Full Profile:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI58918
--OR--
· Apply Fix Pack 8.5.5.10 or later.

For V8.0.0.0 through 8.0.0.12:
· Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI58918

--OR--
· Apply Fix Pack 8.0.0.13 or later.

For V7.0.0.0 through 7.0.0.41:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI58918

--OR--
· Apply Fix Pack 7.0.0.43 or later.

Workarounds and Mitigations

none

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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 v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

23 June 2016: original document published
13 September 2016: updated fix pack release dates

*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.

Document information

More support for: WebSphere Application Server
General

Software version: 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 #: 1982526

Modified date: 13 September 2016