ESB-2017.2534 - [Win][Linux][IBM i][HP-UX][Solaris][AIX] IBM WebSphere Application Server : Multiple vulnerabilities 2017-10-10

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2534
 Security Bulletin: WebSphere Application Server Edge Caching Proxy may be
           vulnerable to HTTP response splitting (CVE-2017-1503)
                              10 October 2017

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        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:     Cross-site Scripting           -- Remote with User Interaction
                   Provide Misleading Information -- Remote with User Interaction
                   Access Confidential Data       -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-1503  

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22006815

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Security Bulletin: WebSphere Application Server Edge Caching Proxy may be 
vulnerable to HTTP response splitting (CVE-2017-1503)

Security Bulletin

Document information

More support for: WebSphere Application Server

Edge Component

Software version: 7.0, 8.0, 8.5, 9.0

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

Reference #: 2006815

Modified date: 09 October 2017

Summary

The Edge Caching Proxy component of WebSphere Application Server may be 
vulnerable to HTTP response splitting attack.

Vulnerability Details

CVEID: CVE-2017-1503

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/129578 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 9.0

Version 8.5

Version 8.0

Version 7.0

Remediation/Fixes

The recommended solution is to apply the Fix Pack or PTF for each named 
product as soon as practical.

Fix:

Apply an Interim Fix, Fix Pack or PTF containing APAR PI82587 as noted below:

For IBM WebSphere Application Server For V9.0.0.0 through 9.0.0.4:

Upgrade to 9.0.0.3 fix pack level then apply Interim Fix PI82587

- -- OR

Upgrade to 9.0.0.4 fix pack level then apply Interim Fix PI82587

- -- OR

Apply Fix Pack 5 (9.0.0.5), or later (targeted availability 13 October 2017).

For V8.5.0.0 through 8.5.5.12:

Upgrade to 8.5.5.11 fix pack level then apply Interim Fix PI82587

- -- OR

Upgrade to 8.5.5.12 fix pack level then apply Interim Fix PI82587

- -- OR

Apply Fix Pack 13 (8.5.5.13), or later (targeted availability 5 February 
2018).

For V8.0.0.0 through 8.0.0.1 3:

Upgrade to 8.0.0.12 fix pack level then apply Interim Fix PI82587

- -- OR

Upgrade to 8.0.0.13 fix pack level then apply Interim Fix PI82587

- -- OR

Apply Fix Pack 14 (8.0.0.14), or later (targeted availability 30 October 
2017).

For V7.0.0.0 through 7.0.0.43:

Upgrade to a minimum of 7.0.0.41 fix pack level then apply Interim Fix PI82587

- -- OR

Apply Fix Pack 45 (7.0.0.45), or later (targeted availability 2Q 2018).

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

09 October 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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