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Category:   Application (Firewall)  >   Tiny Personal Firewall Vendors:   Tiny Software
(A User Provides a Configuration Fix) Re: Tiny Personal Firewall Lets Physically Local Users Accept or Deny Connections When a Workstation is Locked
SecurityTracker Alert ID:  1003715
SecurityTracker URL:
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Mar 2 2002
Impact:   Host/resource access via network, Modification of system information
Fix Available:  Yes  
Version(s): 2.0.15a, possibly other versions
Description:   A vulnerability was reported in the Tiny Personal Firewall from Tiny Software. A physically local user can cause connections to be permitted on an unattended, locked workstation.

It is reported that when a workstation is locked (ctrl+alt+del), the firewall software's popup alert/dialogue still jumps to the foreground to request that the local console user either permit or deny a connection. A physically local user can bypass the locked workstation restrictions and permit or deny the connection via the popup alert window.

Impact:   A physically local user can cause firewall connections to be permitted or denied on a locked workstation.
Solution:   A user has reported that you can uncheck the "learning" mode so that the firewall will no longer pop open windows asking whether connections should be permitted or denied.
Vendor URL: (Links to External Site)
Cause:   Access control error, State error
Underlying OS:  Windows (Any)
Underlying OS Comments:  Tested on Windows 2000

Message History:   This archive entry is a follow-up to the message listed below.
Mar 1 2002 Tiny Personal Firewall Lets Physically Local Users Accept or Deny Connections When a Workstation is Locked

 Source Message Contents

Subject:  Re: ... Tiny Personal Firewall ...

regarding the tiny firewall "bug", when you finish configuring the firewall
you must uncheck the "learning" mode, in this case the firewall wont popup
any window asking to permit or deny .

  thanks ,

----- Original Message -----
From: "Andrew Barkley" <>
To: <>
Sent: Thursday, February 28, 2002 4:53 PM
Subject: ... Tiny Personal Firewall ...

> Hi ...
> Scanning hosts running the Tiny Personal Firewall (2.0.15a) on W2K
> workstations that have been locked (ctl + alt + del)
> The popup alert/dialogue jumps to the foreground, thus open to accept
> permit/deny input from the local console, even when the workstations are
> locked (ctl + alt + del).  Thus an untrusted individual whom has local
> to individuals workstations can scan a workstation/network, wait for the
> alert dialogue and enter "permit" on unattended (locked workstations)
> the owners permission/knowledge, No need to first unlock (ctl + alt + del)
> ...
> CHEERS ...


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