From: Adrian Hoe <adrianhoe@nowhere.com>
Subject: Re: C's trikery semantic opens up backdoor in new Linux kernel
Date: Fri, 14 Nov 2003 11:31:04 +0800
Date: 2003-11-14T11:31:04+08:00 [thread overview]
Message-ID: <3FB44C78.5050501@nowhere.com> (raw)
In-Reply-To: ztednTNn-_79Ji-iRVn-tw@gbronline.com
Wes Groleau wrote:
>
>> Yeah, = and == make a lot of difference. It supposed to be:
>>
>> someone == root
>>
>> but it turned up to be
>>
>> some = root
>
>
> Correction: it was intended to LOOK LIKE
>
> someone == root
>
> but the
>
> some = root
>
> was intentional, and the CM mechanism was cheated
> to get it in without tracing it to who did it.
>
>
According to my understanding of the article, it was intended like this:
if someone == root
but the statement was deliberately/mistakenly written like this:
if some = root
Consider this:
int main()
{
int root = 1;
int someone;
someone=root;
if (someone==root) {
printf ("Some is root!\n");
}
if (someone=root) { /* this cannot happen in Ada */
printf ("Some has become root!\n");
}
}
--
Adrian Hoe
m a i l b o x AT a d r i a n h o e . c o m
next prev parent reply other threads:[~2003-11-14 3:31 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-12 3:17 C's trikery semantic opens up backdoor in new Linux kernel Adrian Hoe
2003-11-12 4:26 ` Stephane Richard
2003-11-12 5:13 ` J Cusick
2003-11-12 7:18 ` Vinzent 'Gadget' Hoefler
2003-11-12 7:50 ` Duncan Sands
2003-11-12 12:08 ` Vinzent 'Gadget' Hoefler
2003-11-12 13:38 ` Duncan Sands
2003-11-12 14:09 ` Vinzent 'Gadget' Hoefler
2003-11-13 21:04 ` Craig Carey
2003-11-14 6:45 ` Freejack
2003-11-14 8:33 ` Erlo Haugen
2003-11-14 9:44 ` Vinzent 'Gadget' Hoefler
2003-11-14 10:16 ` Dmitry A. Kazakov
2003-11-25 10:06 ` Craig Carey
2003-11-25 11:20 ` Dmitry A. Kazakov
2003-11-14 15:31 ` Robert I. Eachus
2003-11-14 13:12 ` Georg Bauhaus
2003-11-14 13:31 ` Duncan Sands
2003-11-14 14:56 ` Vinzent 'Gadget' Hoefler
2003-11-14 15:08 ` Georg Bauhaus
2003-11-14 15:38 ` Duncan Sands
2003-11-14 17:57 ` Georg Bauhaus
2003-11-14 15:47 ` Robert I. Eachus
2003-11-14 16:38 ` Vinzent 'Gadget' Hoefler
2003-11-19 4:13 ` Dave Thompson
2003-11-21 15:34 ` Martin Krischik
2003-11-23 2:20 ` Hyman Rosen
2003-11-27 4:22 ` Dave Thompson
2003-11-28 14:01 ` Hyman Rosen
2003-11-12 17:37 ` tmoran
2003-11-12 18:03 ` Warren W. Gay VE3WWG
2003-11-12 8:51 ` Adrian Hoe
2003-11-12 12:32 ` Preben Randhol
2003-11-13 5:50 ` Chad R. Meiners
2003-11-12 22:59 ` Wes Groleau
2003-11-14 3:31 ` Adrian Hoe [this message]
2003-11-14 11:00 ` Dmytry Lavrov
2003-11-15 5:00 ` Adrian Hoe
2003-11-15 5:02 ` Adrian Hoe
2003-11-16 11:29 ` Dmytry Lavrov
2003-11-17 17:07 ` Warren W. Gay VE3WWG
2003-11-16 11:35 ` Dmytry Lavrov
2003-11-15 19:30 ` Wes Groleau
2003-11-12 8:52 ` Adrian Hoe
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox