Advertisements

 Sun Java System Web Server "redirect" Vulnerability

Wednesday, 8 August 2007

Description
Sun(sm) Alert Notification
  • Sun Alert ID: 103003
  • Synopsis: Vulnerability in Redirect Functionality Affects Sun Java System Web Server
  • Category: Security
  • Product: Sun Java System Web Server 7.0, Sun Java System Web Server 6.1
  • BugIDs: 6519839
  • Avoidance: Patch, Upgrade
  • State: Resolved
  • Date Released: 02-Aug-2007
  • Date Closed: 02-Aug-2007
  • Date Modified:

1. Impact

A vulnerability in Sun Java System Web Server may allow improper HTTP header injection, HTTP response splitting attacks and unauthorized access to resources.

2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

  • Sun Java System Web Server 6.1 without Service Pack 8
  • Sun Java System Web Server 6.1 without patch 116648-20
  • Sun Java System Web Server 7.0 without Update 1
  • Sun Java System Web Server 7.0 without patch 125437-07

x86 Platform

  • Sun Java System Web Server 6.1 without Service Pack 8
  • Sun Java System Web Server 6.1 without patch 116649-20
  • Sun Java System Web Server 7.0 without Update 1
  • Sun Java System Web Server 7.0 without patch 125438-07

Linux

  • Sun Java System Web Server 6.1 without Service Pack 8
  • Sun Java System Web Server 6.1 without patch 118202-12
  • Sun Java System Web Server 7.0 without Update 1
  • Sun Java System Web Server 7.0 without patch 125439-07

Windows

  • Sun Java System Web Server 6.1 without Service Pack 8
  • Sun Java System Web Server 6.1 without patch 121524-04
  • Sun Java System Web Server 7.0 without Update 1
  • Sun Java System Web Server 7.0 without patch 125441-06

HP-UX

  • Sun Java System Web Server 6.1 without Service Pack 8
  • Sun Java System Web Server 6.1 without patch 121510-04
  • Sun Java System Web Server 7.0 without Update 1
  • Sun Java System Web Server 7.0 without patch 125440-01

AIX

  • Sun Java System Web Server 6.1 without Service Pack 8

Note: Other versions of the above listed applications are not affected by this issue.

To determine the version of Sun Java System Web Server 6.1 on a system, the following command can be run:

    $ <WS-install>/https-<host>/start -version 

(Where <WS-install> is the installation directory of the Web Server and <host> should be the actual host name on which the Web Server is installed).

To determine the version of Sun Java System Web Server 7.0 on a system, the following command can be run:

    $ <WS-install>/bin/wadm --version 

(Where <WS-install> is the installation directory of the Web Server).

This issue can occur when a 'redirect' Server Application Function (SAF) is set to use the 'url-prefix' parameter along with the 'escape' parameter being set to 'no', or an 'Error' directive is set to use the 'url-prefix' parameter in 'obj.conf' file.

3. Symptoms

There are no predictable symptoms that would indicate the described issue has been exploited.


Solution Summary

4. Relief/Workaround

To avoid this issue until an upgrade can be applied, edit the 'obj.conf' in the Webserer instance's 'config' directory to ensure the following:

  1. If you use the redirect SAF's url-prefix parameter, do not specify escape="no".
  2. Never use the url-prefix parameter in an 'Error' directive.

Safe examples:

    NameTrans fn="redirect" from="/oldurl" url="/newurl" escape="no"
    NameTrans fn="redirect" from="/oldprefix" url-prefix="/newprefix"
    Error fn="redirect" from="/oldurl" url="/newurl"

Unsafe examples:

    NameTrans fn="redirect" from="/oldprefix" url-prefix="/newprefix" escape="no"
    Error fn="redirect" from="/oldprefix" url-prefix="/newprefix"
    Error fn="redirect" from="/oldprefix" url-prefix="/newprefix" escape="yes"

(By default, the 'escape' parameter is set to "yes". If the 'obj.conf' file is modified, the Webserver instance should be restarted).


5. Resolution

This issue is addressed in the following releases:

SPARC Platform

  • Sun Java System Web Server 6.1 with Service Pack 8 or later
  • Sun Java System Web Server 6.1 with patch 116648-20 or later
  • Sun Java System Web Server 7.0 with Update 1 or later
  • Sun Java System Web Server 7.0 with patch 125437-07 or later

x86 Platform

  • Sun Java System Web Server 6.1 with Service Pack 8 or later
  • Sun Java System Web Server 6.1 with patch 116649-20 or later
  • Sun Java System Web Server 7.0 with Update 1 or later
  • Sun Java System Web Server 7.0 with patch 125438-07 or later

Linux

  • Sun Java System Web Server 6.1 with Service Pack 8 or later
  • Sun Java System Web Server 6.1 with patch 118202-12 or later
  • Sun Java System Web Server 7.0 with Update 1 or later
  • Sun Java System Web Server 7.0 with patch 125439-07 or later

Windows

  • Sun Java System Web Server 6.1 with Service Pack 8 or later
  • Sun Java System Web Server 6.1 with patch 121524-04 or later
  • Sun Java System Web Server 7.0 with Update 1 or later
  • Sun Java System Web Server 7.0 with patch 125441-06 or later

HP-UX

  • Sun Java System Web Server 6.1 with Service Pack 8 or later
  • Sun Java System Web Server 6.1 with patch 121510-04 or later
  • Sun Java System Web Server 7.0 with Update 1 or later
  • Sun Java System Web Server 7.0 with patch 125440-01 or later

AIX

  • Sun Java System Web Server 6.1 with Service Pack 8 later

Sun Java System Web Server 6.1 Service Pack 8 is available at

http://www.sun.com/download/products.xml?id=4694392a

Sun Java System Web Server 7.0 Update 1 is available at

http://www.sun.com/download/products.xml?id=467713d6


This Sun Alert notification is being provided to you on an "AS IS" basis. This Sun Alert notification may contain information provided by third parties. The issues described in this Sun Alert notification may or may not impact your system(s). Sun makes no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun proprietary and confidential information. It is being provided to you pursuant to the provisions of your agreement to purchase services from Sun, or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun Alert notification may only be used for the purposes contemplated by these agreements.

Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.



Share this content:
        
Advertisements
Home | News | Articles | Advisories | Submit | Alerts | Links | What is XSS | About | Contact | Some Rights Reserved.