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Category:   Application (Generic)  >   Bugzilla Vendors:
Bugzilla Randomization Bug Lets Remote Users Bypass Cross-Site Request Forgery Protections
SecurityTracker Alert ID:  1021671
SecurityTracker URL:
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Feb 4 2009
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.0.7, 3.2.1, 3.3.2
Description:   A vulnerability was reported in Bugzilla. A remote user can bypass the cross-site request forgery protection mechanism.

When running under mod_perl, the system generates random numbers using srand() at startup time. As a result, the cross-site request forgery (CSRF) tokens are identical.

On systems with the new attachment_base functionality, a remote user may be able to exploit this to view private attachments.

Max Kanat-Alexander reported this vulnerability.

Impact:   A remote user can bypass the cross-site request forgery protections.
Solution:   The vendor has issued a fix (3.0.8, 3.2.2, 3.3.3)

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.

 Source Message Contents

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