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Vulnerability of VPN-1: program execution by SecureClient

Synthesis of the vulnerability 

An attacker can store a program on system, in order to make it run by SecureClient.
Vulnerable systems: CheckPoint SecureClient, CheckPoint SecuRemote, VPN-1, Kaspersky AV, Windows 2000, Windows NT.
Severity of this threat: 1/4.
Creation date: 19/01/2006.
Références of this weakness: TZO-012006, VIGILANCE-VUL-5540.

Description of the vulnerability 

The SR_Watchdog.exe program runs the SR_GUI.exe graphical interface using CreateProcess() function:
  C:\Program Files\CheckPoint\SecuRemote\bin\SR_GUI.exe

However, this path is not enclosed between quotes. When permissions permit it, an attacker can thus create a program with a short name:
  C:\Program.exe

This program is then run with SR_Watchdog.exe rights.
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This cybersecurity weakness impacts software or systems such as CheckPoint SecureClient, CheckPoint SecuRemote, VPN-1, Kaspersky AV, Windows 2000, Windows NT.

Our Vigil@nce team determined that the severity of this security vulnerability is low.

The trust level is of type unique source, with an origin of user account.

An attacker with a expert ability can exploit this vulnerability bulletin.

Solutions for this threat 

Solution pour Windows 2000.
Microsoft propose un patch (il est aussi inclus dans le Service Pack 2) :
 - Windows 2000 Professional :
 - Windows 2000 Server :
 - Windows 2000 Advanced Server :
     http://www.microsoft.com/Downloads/Release.asp?ReleaseID=23359
De plus, comme annoncé dans MS2002-064, il faut changer les permissions de la racine :
 - Administrateurs : contrôle total (ce répertoire, les sous-répertoires et les fichiers)
 - Créateur Propriétaire : contrôle total (sous-répertoires et fichiers)
 - System : contrôle total (ce répertoire, les sous-répertoires et les fichiers)
 - Tout le monde : lecture et exécution (ce répertoire)
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