Vulnerability Note VU#184558

BEA WebLogic Server contains a vulnerability in the URL pattern matching

Overview

There is a vulnerability in the URL pattern matching functionality of BEA WebLogic Server that could allow URL restrictions to be bypassed.

I. Description

BEA Systems describes WebLogic Server as "an industrial-strength application infrastructure for developing, integrating, securing, and managing distributed Java applications." The WebLogic Server provides a feature that allows an administrator to restrict access to certain URLs. There is a vulnerability in this URL pattern matching feature that could cause patterns ending in "*" rather than "/*" to be evaluated as wildcard patterns.

According to the BEA Security Advisory,

In WebLogic Server version 6.x, the illegal URL pattern of /mydir* is treated the same as the legal URL pattern /mydir/*. If a WebLogic Server version 6.x Web application used the illegal syntax and is moved to WebLogic Server version 7.x or greater, the URL patterns that were protected by the illegal syntax will stop being protected. There is no notification in the change of protection.

According to the BEA Security Advisory , the following versions of WebLogic Server and Express are affected by this vulnerability:

WebLogic Server and WebLogic Express version 8.1 through Service Pack 1, on all platforms
WebLogic Server and WebLogic Express version 7.0 through Service Pack 4, on all platforms

II. Impact

A remote user could access restricted URLs that were previously protected by specific URL pattern matching syntax.

III. Solution

Upgrade or Fix Syntax

WebLogic Server and WebLogic Express version 8.1

In all deployed web applications, convert the illegal URL patterns to legal syntax.

WebLogic Server and WebLogic Express version 7.0

In all deployed web applications, convert the illegal URL patterns to legal syntax.

Systems Affected

Vendor	Status	Date Notified	Date Updated
BEA Systems Inc.	Vulnerable	26-Apr-2004

References

http://dev2dev.bea.com/resourcelibrary/advisoriesnotifications/BEA04_56.00.jsp
http://secunia.com/advisories/11435/
http://www.securitytracker.com/alerts/2004/Apr/1009896.html

Credit

This vulnerability was reported by BEA Systems Inc.

This document was written by Damon Morda.

Other Information

Date Public:	2004-04-21
Date First Published:	2004-04-26
Date Last Updated:	2004-04-26
CERT Advisory:
CVE-ID(s):
NVD-ID(s):
US-CERT Technical Alerts:
Metric:	4.16
Document Revision:	19

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