full-disclosure - Re: screen 4.0.3 local Authentication Bypass

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Message-ID: <20070604.813591b8d65e87287fd5e77cca351e62@cynops.de>
Date: Mon, 4 Jun 2007 10:14:58 +0200
From: Alexander Klink <a.klink@...ops.de>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: screen 4.0.3 local Authentication Bypass

Hi,

On Mon, Jun 04, 2007 at 05:36:31AM +0200, rembrandt@...erlin.de wrote:
> It has been tested on OpenBSD 4.1 + screen 4.0.3 on x86.
> 
> How to reproduce:
> 
> Lock screen using ctrl+x
I guess you mean Ctrl+a+x?

> Choose a Password
> Confirm the Password
> 
> Screen asks for a Password to unlock the screen.
> Just press ctrl+c and it displays "Getpass error".
> 2 seconds later the screen is unlocked and you`ve access.
I can't reproduce this on either Mac OS X (screen 4.00.03) or
Debian (screen 4.00.02) ...

Regards,
    Alex

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