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Category:   Application (Generic)  >   PHPMailer Vendors:   phpmailer.sourceforge.net
PHPMailer Input Validation Flaw in 'code_generator.phps' Example Code Lets Remote Users Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1039026
SecurityTracker URL:  http://securitytracker.com/id/1039026
CVE Reference:   CVE-2017-11503   (Links to External Site)
Date:  Aug 1 2017
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): prior to 5.2.24
Description:   A vulnerability was reported in PHPMailer. A remote user can conduct cross-site scripting attacks.

The 'code_generator.phps' example script does not properly filter HTML code from user-supplied input before displaying the input. 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 PHPMailer 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.

The original advisory is available at:

https://packetstormsecurity.com/files/143138/phpmailer-xss.txt

Shahab Shamsi reported this vulnerability.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the PHPMailer 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.
Solution:   The vendor has issued a fix (5.2.24).

The vendor advisory is available at:

https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md

Vendor URL:  github.com/PHPMailer/PHPMailer (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents



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