linux-kernel - Re: old buffer overflow in moxa driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200705010301.34571.ismail@pardus.org.tr>
Date:	Tue, 1 May 2007 03:01:29 +0300
From:	Ismail Dönmez <ismail@...dus.org.tr>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	dann frazier <dannf@...com>, linux-kernel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>, support@...a.com.tw,
	dilinger@...ian.org
Subject: Re: old buffer overflow in moxa driver

On Tuesday 01 May 2007 02:04:55 Alan Cox wrote:
> >   I noticed that the moxa input checking security bug described by
> > CVE-2005-0504 appears to remain unfixed upstream.
> >
> > The issue is described here:
> >   http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0504
> >
> > Debian has been shipping the following patch from Andres Salomon. I
> > tried contacting the listed maintainer a few months ago but received
> > no response.
>
>        case MOXA_LOAD_BIOS:
>         case MOXA_FIND_BOARD:
>         case MOXA_LOAD_C320B:
>         case MOXA_LOAD_CODE:
>                 if (!capable(CAP_SYS_RAWIO))
>                         return -EPERM;
>                 break;
>
> At the point you abuse these calls you can already just load arbitary
> data from userspace anyway.

So the possible exploit will only work when run by root, is that what you 
mean? If so isn't that still a security problem?

Sorry if I misunderstood what you said.

Regards,
ismail


Download attachment "signature.asc " of type "application/pgp-signature" (190 bytes)