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Category:   Application (VPN)  >   OpenVPN Vendors:   openvpn.net
OpenVPN Buffer Overflow When Using 'Key Method 1' Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1039470
SecurityTracker URL:  http://securitytracker.com/id/1039470
CVE Reference:   CVE-2017-12166   (Links to External Site)
Date:  Sep 29 2017
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in OpenVPN. A remote user can execute arbitrary code on the target system.

A remote user can send a specially crafted key to trigger a buffer overflow in the read_key() function and execute arbitrary code on the target system.

Systems using 'Key Method 1' are affected.

Guido Vranken reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (2.3.18, 2.4.4).

The vendor advisory is available at:

https://community.openvpn.net/openvpn/wiki/CVE-2017-12166

Vendor URL:  community.openvpn.net/openvpn/wiki/CVE-2017-12166 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


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