Re: [Full-disclosure] Microsoft Jet Engine MDB File Parsing Stack- Overflow Vulnerability

From: jf <jf@danglingpointers.net>
To: Juha-Matti Laurio <juha-matti.laurio@netti.fi>
Cc: CaseArmour.net Security Administrator <security@casearmour.net>,bugtraq@securityfocus.com,frankruder@hotmail.com,full-disclosure@lists.grok.org.uk
Subject: Re: [Full-disclosure] Microsoft Jet Engine MDB File Parsing Stack- Overflow Vulnerability
Date:


is it? If I recall correctly, the hexview advisory was the result of
something like a word-to-byte truncation followed by a byte
sign-extension (but its been long enough that I may be misremembering
it)

In this advisory it was not entirely clear what
the condition was, from what I remember reading of it the other day, it
didn't get into how/why, it just like used ecx or a register as a counter
but didn't show how it came to that value?

Whats interesting is that the hexview patching the bug itself is trivial
from the assembly (not taking into account the work encountered from bin patching
itself) and I know many organizations attempted to put a lot of pressure
to get it patched and failed to do so

On Sun, 18 Nov 2007, Juha-Matti Laurio wrote:

> Date: Sun, 18 Nov 2007 01:58:02 +0200 (EET)
> From: Juha-Matti Laurio <juha-matti.laurio@netti.fi>
> To: CaseArmour.net Security Administrator <security@casearmour.net>,
>     bugtraq@securityfocus.com, frankruder@hotmail.com,
>     full-disclosure@lists.grok.org.uk
> Subject: Re: [Full-disclosure] Microsoft Jet Engine MDB File Parsing Stack
>     Overflow Vulnerability
>
> There is a well-known unpatched code execution type vulnerability reported originally in msjet40.dll version 4.00.8618.0 too.
> This issue reported by HexView is known since March 2005:
>
> http://www.securityfocus.com/bid/12960
> http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0944
>
> We probably don't see a fix for this issue.
>
> - Juha-Matti
>
> "CaseArmour.net Security Administrator" <security@casearmour.net> kirjoitti:
> > It would be useful to know if this is also an issue with msjet40.dll
> > 4.0.9510.0 (Windows Server 2003 SP2 + hotfixes).  I have an installer
> > for Windows XP SP2 that -- seems -- to cleanly apply Windows Server 2003
> > SP2's MDAC 2.82.  I haven't been able to give it a serious, hard testing
> > because I don't have many apps that still use MDAC.
> >
> > On Fri, 16 Nov 2007 19:25:29 +0800, "cocoruder" <cocoruder@gmail.com>
> > said:
> > >
> > >     (C:\Windows\System32\msjet40.dll, version is 4.0.8618.0)
>
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