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Category:   Application (Generic)  >   Bugzilla Vendors:   Mozilla.org
Bugzilla 'syncshadowdb' Unsafe Temporary Files May Let Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1015411
SecurityTracker URL:  http://securitytracker.com/id/1015411
CVE Reference:   CVE-2005-4534   (Links to External Site)
Updated:  Dec 28 2005
Original Entry Date:  Dec 27 2005
Impact:   Modification of system information, Modification of user information, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.6.10 and prior versions
Description:   A vulnerability was reported in Bugzilla in the 'syncshadowdb' script. A local user can obtain elevated privileges.

The 'syncshadowdb' script uses temporary files in an unsafe manner. A local user can create a symbolic link (symlink) from a critical file on the system to a temporary file to be used by the script. Then, when the script is executed by the bug tracking system, the symlinked file will be created or overwritten with the privileges of the bug tracking system.

Javier Fernandez-Sanguino Pena reported this vulnerability.

Impact:   A local user can obtain the privileges of the bug tracking system.
Solution:   A patch is available at:

https://bugzilla.mozilla.org/show_bug.cgi?id=305353

The fix will be included in the pending 2.16.11 version.

Versions 2.18.* and 2.20.* are not affected.

The vendor's advisory is available at:

http://www.bugzilla.org/security/2.16.10-nr/

Vendor URL:  www.bugzilla.org/security/2.16.10-nr/ (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


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