Secunia Research: Oracle BEA WebLogic Server Plug-ins Certificate Buffer Overflow

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                     Secunia Research 15/04/2009

 - Oracle BEA WebLogic Server Plug-ins Certificate Buffer Overflow -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

* Oracle BEA WebLogic Server Plug-ins version 1.0.1166189.

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System access
Where:  From Remote

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3) Vendor's Description of Software 

"... the world's best application server for building and deploying
enterprise applications and services ...".

Product Link:
http://www.oracle.com/technology/products/weblogic/index.html

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in the Oracle BEA
WebLogic Server plug-ins for web servers, which can be exploited by
malicious people to compromise a vulnerable system.

The Oracle BEA WebLogic Server can be configured to receive requests
via an Apache web server. In this case, a plug-in is installed in the
Internet-facing web server that passes the request to a WebLogic
server. 

The Apache web server may be configured to accept SSL connections and
forward the request to the WebLogic server along with any SSL-related
information. If the SSL client supplies a certificate (and the Apache
server is configured to accept it), then the certificate is passed to
the WebLogic plug-in via an environment variable.

The vulnerability is caused by a boundary error when parsing 
certificates and can be exploited to cause a stack-based buffer 
overflow by supplying a specially crafted certificate.

Successful exploitation may allow execution of arbitrary code.

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5) Solution 

Apply patches released by the vendor.

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6) Time Table 

01/03/2009 - Vendor notified.
06/03/2009 - Vendor confirms vulnerability.
17/03/2009 - Vendor provides preliminary patch. 
15/04/2009 - Public disclosure.

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7) Credits 

Discovered by Dyon Balding, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2009-0190 for the vulnerability.

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9) About Secunia

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-23/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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