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AUSCERT External Security Bulletin Redistribution
ESB-2015.2295
Security Bulletin: HTTP Request smuggling vulnerability may
affect IBM HTTP Server (CVE-2015-3183)
2 September 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM HTTP Server
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
Solaris
Windows
Impact/Access: Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2015-3183
Reference: ASB-2015.0086
ESB-2015.2216
ESB-2015.2215
ESB-2015.2154
ESB-2015.2113
ESB-2015.2004
ESB-2015.1872
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21963361
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Security Bulletin: HTTP Request smuggling vulnerability may affect IBM HTTP
Server (CVE-2015-3183)
Document information
More support for:
IBM HTTP Server
Software version:
6.1, 7.0, 8.0, 8.5, 8.5.5
Operating system(s):
AIX, HP-UX, Linux, Solaris, Windows
Reference #:
1963361
Modified date:
2015-09-01
Security Bulletin
Summary
Request smuggling vulnerability may affect the IBM HTTP Server used by IBM
WebSphere Application Server
Vulnerability Details
CVEID: CVE-2015-3183
DESCRIPTION: Apache HTTP Server is vulnerable to HTTP request smuggling,
caused by a chunk header parsing flaw in the apr_brigade_flatten() function.
By sending a specially-crafted request in a malformed chunked header to the
Apache HTTP server, an attacker could exploit this vulnerability to poison the
web cache, bypass web application firewall protection, and conduct XSS
attacks.
CVSS Base Score: 6.1
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/104844 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
Affected Products and Versions
This vulnerability affects all versions and releases of IBM HTTP Server
(powered by Apache) component in all editions of WebSphere Application Server
and bundling products.
Version 8.5.5
Version 8.5
Version 7.0
Version 6.1
Remediation/Fixes
The recommended solutions is to apply the interim fix, Fix Pack or PTF
containing APAR PI42928 for each named product as soon as practical.
For affected IBM HTTP Server for WebSphere Application Server:
For V8.5.0.0 through 8.5.5.6 Full Profile:
* Upgrade to a minimum of Fix Pack 8.5.5.6 or later then apply Interim Fix
PI42928
- --OR--
* Apply Fix Pack 8.5.5.7 or later (targeted availability 11 September
2015).
For V8.0 through 8.0.0.11:
* Upgrade to a minimum of Fix Pack 8.0.0.11 or later and then apply Interim
Fix PI42928
- --OR--
* Apply Fix Pack 8.0.0.12 or later (targeted availability 18 January 2016).
For V7.0.0.0 through 7.0.0.37:
* Upgrade to a minimum of Fix Pack 7.0.0.37 or later and then apply Interim
Fix PI42928
- --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 cumulative Interim Fix PI45596
(this includes the fix for PI42928)
For unsupported versions IBM recommends upgrading to a fixed, supported
version of the product.
Workarounds and Mitigations
none
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
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
01 September 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.
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