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Category:   Application (Generic)  >   Wonderware Historian Client Vendors:   Schneider Electric, Wonderware
Wonderware Historian Client XML External Entity Processing Flaw Lets Remote Users Deny Service and Potentially Read Files on the Target System
SecurityTracker Alert ID:  1038542
SecurityTracker URL:  http://securitytracker.com/id/1038542
CVE Reference:   CVE-2017-7907   (Links to External Site)
Date:  May 23 2017
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2014 R2 SP1 and prior
Description:   A vulnerability was reported in Wonderware Historian Client. A remote user can conduct XML external entity attacks to cause denial of service conditions or potentially obtain files on the target system.

A remote user can create a specially crafted XML External Entity (XXE) file that, when loaded by the target user via 'aaTrend.exe', will read files on the target system with the privileges of the target user or cause denial of service conditions on the target system.

Andrey Zhukov from USSC (via ICS-Cert) reported this vulnerability.

Impact:   A remote user can cause denial of service conditions or potentially obtain files on the target system.
Solution:   The vendor has issued a fix (HC_SecurityHF_10.6.13100) [in April 2017].

The vendor advisory is available at:

http://software.schneider-electric.com/pdf/security-bulletin/lfsec00000120/

Vendor URL:  software.schneider-electric.com/pdf/security-bulletin/lfsec00000120/ (Links to External Site)
Cause:   Access control error, Input validation error

Message History:   None.


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