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Zend Optimizer 3.3.3 Insecure Permissions

Zend Optimizer 3.3.3 Insecure Permissions
Posted Apr 4, 2012
Authored by LiquidWorm | Site zeroscience.mk

Zend Optimizer version 3.3.3 on Windows suffers from an insecure permissions vulnerability.

tags | exploit
systems | windows
MD5 | 7c52be67baa35ad06b4a28bae105e55d

Zend Optimizer 3.3.3 Insecure Permissions

Change Mirror Download

Zend Optimizer 3.3.3 (Windows) Insecure Permissions


Vendor: Zend Technologies Ltd.
Product web page: http://www.zend.com

Affected version: 3.3.3* and 3.3.0*

* Note: The patch did not change the version number of the affected
product, so the updated version is still 3.3.3, but with proper permissions.

Summary: Zend Optimizer is a free application that runs the files
encoded using Zend Guard and enhances the overall performance of
your PHP applications.

Desc: The Zend Optimizer package for Windows is vulnerable to an
elevation of privileges vulnerability which can be used by a simple
user that can change the library file with a binary of choice. The
vulnerability exist due to the improper permissions, with the 'F' flag
(full control) for the 'Everyone' group, for the 'ZendExtensionManager.dll'
library file and 'ZendOptimizer.dll' which are bundled with the Zend
Optimizer (Runtime for PHP 5.2 and earlier) installation package.

Tested on: Microsoft Windows XP Professional SP3 (EN)


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Vendor status:

[01.02.2012] Vulnerability discovered.
[23.02.2012] Contact with the vendor.
[23.02.2012] Vendor responds asking for details.
[24.02.2012] Sent detailed information to the vendor.
[24.02.2012] Vendor assigns appropriate team for coordination.
[27.02.2012] Vendor is analyzing the issue, working on a fix.
[27.02.2012] Asked vendor for confirmation and scheduled patch release date.
[28.02.2012] Vendor replies with confirmation of the issue.
[05.03.2012] Asked vendor for status update.
[06.03.2012] Vendor created fix for the issue, promising patch release date.
[07.03.2012] Sent coordination details to the vendor.
[14.03.2012] Asked vendor for status update.
[14.03.2012] Vendor replies.
[21.03.2012] Sent advisory release information to the vendor.
[21.03.2012] Vendor extends the patch release date.
[29.03.2012] Vendor publishes new version to address this issue.
[03.04.2012] Coordinated public security advisory released.



Advisory ID: ZSL-2012-5083
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2012-5083.php

Zend Advisory: http://static.zend.com/topics/Zend-Optimizer-3.3.3-Release-Notes-V2.txt
http://www.zend.com/en/products/guard/downloads



01.02.2012


---

C:\Program Files\Zend\ZendOptimizer-3.3.0\lib>cacls ZendExtensionManager.dll
C:\Program Files\Zend\ZendOptimizer-3.3.0\lib\ZendExtensionManager.dll Everyone:F
BUILTIN\Users:R
BUILTIN\Power Users:C
BUILTIN\Administrators:F
NT AUTHORITY\SYSTEM:F
TESTPC\TESTUSER:F


C:\Program Files\Zend\ZendOptimizer-3.3.0\lib>cd Optimizer-3.3.0\php-5.2.x

C:\Program Files\Zend\ZendOptimizer-3.3.0\lib\Optimizer-3.3.0\php-5.2.x>cacls ZendOptimizer.dll
C:\Program Files\Zend\ZendOptimizer-3.3.0\lib\Optimizer-3.3.0\php-5.2.x\ZendOptimizer.dll Everyone:F
BUILTIN\Users:R
BUILTIN\Power Users:C
BUILTIN\Administrators:F
NT AUTHORITY\SYSTEM:F
TESTPC\TESTUSER:F


C:\Program Files\Zend\ZendOptimizer-3.3.0\lib\Optimizer-3.3.0\php-5.2.x>

---
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