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Category:   Application (Generic)  >   curl Vendors:   curl.haxx.se
cURL DLL Loading Error Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1036008
SecurityTracker URL:  http://securitytracker.com/id/1036008
CVE Reference:   CVE-2016-4802   (Links to External Site)
Date:  Jun 1 2016
Impact:   Execution of arbitrary code via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.11.1 - 7.49.0
Description:   A vulnerability was reported in cURL on Windows systems. A local user can obtain elevated privileges on the target system.

A local user can create a specially crafted DLL file in a directory on the target Windows-based system. When the target application is executed, the application will load the specially crafted DLL instead of the intended DLL and execute arbitrary code. The code will run with the privileges of the target user.

This type of exploit is also known as "binary planting" or "DLL preloading".

The vendor was notified on May 7, 2016.

Guohui from Huawei WeiRan Labs reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   The vendor has issued a fix (7.49.1).

The vendor's advisory is available at:

https://curl.haxx.se/docs/adv_20160530.html

Vendor URL:  curl.haxx.se/docs/adv_20160530.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (Any)
Underlying OS Comments:  Windows-only

Message History:   None.


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