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Category:   Application (Web Server/CGI)  >   Macromedia JRun Vendors:   Macromedia
Macromedia JRun Has Multiple Bugs That Permit Session Hijacking, Cross-Site Scripting, and File Source Code Disclosure
SecurityTracker Alert ID:  1011404
SecurityTracker URL:  http://securitytracker.com/id/1011404
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Sep 24 2004
Impact:   Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information, Not specified, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 3.0, 3.1, and 4.0
Description:   Several vulnerabilities were reported in Macromedia's JRun server. A remote user can conduct cross-site scripting and session-fixation attacks. A remote user can also view source code for certain types of files on the system. The impact of a buffer overflow was not specified.

The vendor reported that an implementation error in JRun 4.0 in the generation and processing of JSESSIONIDs may allow a remote user to hijack a session or conduct session-fixation attacks.

Some input validation flaws in the JRUn 4.0 Management Console allow cross-site scripting attacks and session-fixation attacks. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the JRun software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can submit a specially crafted request ending with the ';.cfm' string to cause the target JRun server to show the source for certain files on the system. Files that are not associated with Macromedia extensions (e.g., '.php', '.asp', '.pl') are affected.

It is also reported that if the 'verbose' logging debug mode is enabled on the JRun web server connectors, a remote user can trigger a buffer overflow. In the default setting for verbose logging (disabled), the system is not vulnerable to the buffer overflow. The impact was not specified.

The severity rating is critical.

Macromedia credits iDEFENSE with reporting the view source ";.cfm" and connector buffer overflow vulnerabilities, @Stake with reporting the weak JSESSIONID generation vulnerability, and Acros with reporting the "Unsanitized JRun Session ID Cookie Allows Modifying Server Response" vulnerability, a cross-site scripting vulnerability, and a session fixation vulnerability in the JRun Management Console.

Impact:   A remote user can hijack a user session.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the JRun software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A remote user can view the source code of certain types of files on the system.

The impact was not specified for the buffer overflow vulnerability.

Solution:   The vendor has released some patches, available at:

http://www.macromedia.com/devnet/security/security_zone/mpsb04-08.html

Vendor URL:  www.macromedia.com/devnet/security/security_zone/mpsb04-08.html (Links to External Site)
Cause:   Access control error, Boundary error, Input validation error, Randomization error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), UNIX (Tru64), Windows (Any)

Message History:   None.


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