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AUSCERT External Security Bulletin Redistribution
ESB-2007.0183 -- [Win][UNIX/Linux]
Sun Java System Web Server May Allow A User with Revoked Client Certificate
to Access Server Instance Under Certain Conditions
7 June 2007
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AusCERT Security Bulletin Summary
---------------------------------
Product: Sun Java System Web Server 6.1
Sun ONE Web Server 6.1
Publisher: Sun Microsystems
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact: Inappropriate Access
Access: Existing Account
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-102822-1
Revision History:
June 7 2007: Patch available for Sun ONE Web Server on HP-UX
March 21 2007: Initial Release
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Sun(sm) Alert Notification
* Sun Alert ID: 102822
* Synopsis: Sun Java System Web Server May Allow A User with Revoked
Client Certificate to Access Server Instance Under Certain
Conditions
* Category: Security
* Product: Sun Java System Web Server 6.1
* BugIDs: 6437635
* Avoidance: Patch, Upgrade, Workaround
* State: Resolved
* Date Released: 14-Mar-2007
* Date Closed: 14-Mar-2007
* Date Modified: 31-May-2007
1. Impact
A security vulnerability in the Sun Java System Web Server may allow a
local or remote user to gain authorized access to certain web server
instances. When a secure web server instance is set up as a non-root
instance through the admin server and that admin server is configured
to run as root, this vulnerability may allow a user with a revoked
client certificate to access the web server instance under certain
conditions even if a valid Certificate Revocation List (CRL) file is
installed for the instance.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Sun Java System Web Server 6.1 without Service Pack 7
* Sun Java System Web Server 6.1 without patch 116648-19
x86 Platform
* Sun Java System Web Server 6.1 without Service Pack 7
* Sun Java System Web Server 6.1 without patch 116649-19
Linux Platform
* Sun Java System Web Server 6.1 without Service Pack 7
* Sun Java System Web Server 6.1 without patch 118202-11
AIX Platform
* Sun Java System Web Server 6.1 without Service Pack 7
HP-UX Platform
* Sun Java System Web Server 6.1 without Service Pack 7
Important Notes:
The following releases are not affected:
* Sun Java System Web Server 6.0
* Sun Java System Web Server 6.1 for Windows
* Sun Java System Web Server 7.0
This issue only affects hosts which meet the following two conditions:
1) contain a Certificate Revocation List (CRL) which matches certain
criteria
2) contain server instances which run as a user that differs from the
user that the admin server is configured to run as
If both of these conditions are met, a directory with the following
name will exist on the host and it will have permissions which do not
grant access to the affected instance's user. A command such as the
following can be used to determine the permissions of the directory:
$ ls -l <WS-install>/alias/https-<instance>-cert8.dir
Please consult the product documentation for information on
determining which user the active instances are running as.
To determine the version of Sun Java System Web Server on a system,
the following command can be run:
$<WS-install>/https-<host>/start -version
3. Symptoms
There are no reliable symptoms that would indicate the described issue
has occurred.
4. Relief/Workaround
After importing a CRL through Web Server Admin GUI on affected
systems, the following directory will be created:
<WS-install>/alias/https-<instance>-cert8.dir
Manually change the permission/ownership of the cert8.dir directory
and the files within it for this instance to allow the non-root
instance owner to access them.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Sun Java System Web Server 6.1 with Service Pack 7 or later
* Sun Java System Web Server 6.1 with patch 116648-19 or later
x86 Platform
* Sun Java System Web Server 6.1 with Service Pack 7 or later
* Sun Java System Web Server 6.1 with patch 116649-19 or later
Linux Platform
* Sun Java System Web Server 6.1 with Service Pack 7 or later
* Sun Java System Web Server 6.1 with patch 118202-11 or later
AIX Platform
* Sun Java System Web Server 6.1 with Service Pack 7 or later
HP-UX Platform
* Sun Java System Web Server 6.1 with Service Pack 7 or later
* Sun ONE Web Server 6.1, HP-UX patch 121510-03 or later
Sun Java System Web Server 6.1 Service Pack 7 is available at:
http://www.sun.com/download/products.xml?id=45c90ca9
Change History
31-May-2007:
* Updated Resolution section for HP-UX
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
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