Sense of Security - Security Advisory - SOS-10-001 Release Date. 21-Jan-2010 Last Update. 03-Feb-2010 Vendor Notification Date. 11-Dec-2009 Product. TheGreenBow VPN Client Platform. Microsoft Windows Affected versions. 4.65.003, 4.51.001 verified and possibly others. Severity Rating. High Impact. System access Attack Vector. Local Solution Status. Vendor patch CVE reference. CVE-2010-0392 Details. TheGreenBow is an IPsec VPN client that sets up a secure channel for data transport. TheGreenBow VPN Client is vulnerable to a local stack based buffer overflow, which can lead to the compromise of a vulnerable system. The vulnerability is caused due to a boundary error when processing certain sections of tgb (policy) files. Passing an overly long string to "OpenScriptAfterUp" will trigger the overflow. Successful exploitation results in the execution of arbitrary code. Solution. A patch is available from the vendor and will be included in the next release. The patch can be downloaded from: http://www.thegreenbow.com/download.php?id=1000150 Discovered by. Brett Gervasoni from SOS Labs.