Bugtraq mailing list archives
Re: eSafe: Could this be exploited?
From: Nick FitzGerald <nick () virus-l demon co uk>
Date: Fri, 30 Jul 2004 12:34:56 +1200
Kev Ford wrote:
Just an idle thought, but what about scripting? Would it be possible to get some simple scripts through simply by making a large portion of the end of the message useless comment fields? Maybe even a worm that rewrites this 'noise' every time to make a moving target?
Yep, but it need not even be that deliberate. Windows VBS with its ever so forgiving "resume next" "error handler", and some other "resilient" scripting languages (such as mIRC script), means that even some badly truncated malware can be executed "successfully", so long as the "important" part(s) of its functionality are nearer the beginning of the script code than the end. Scripts in such languages that get rogered through partial transmission (this was very common with early mIRC script viruses) can keep on going in their new, truncated forms until they finally get chopped before the minimal code point that makes them replicative. And yes, we have seen this happen in the wild many times already. -- Nick FitzGerald Computer Virus Consulting Ltd. Ph/FAX: +64 3 3529854
Current thread:
- eSafe: Could this be exploited? Hugo van der Kooij (Jul 23)
- Re: eSafe: Could this be exploited? Nick FitzGerald (Jul 24)
- Re: eSafe: Could this be exploited? Oliver () greyhat de (Jul 24)
- Re: eSafe: Could this be exploited? 3APA3A (Jul 24)
- Re: eSafe: Could this be exploited? Andreas Constantinides (MegaHz) (Jul 26)
- Re: eSafe: Could this be exploited? MegaHz (Jul 26)
- Re: eSafe: Could this be exploited? Hugo van der Kooij (Jul 27)
- Re: eSafe: Could this be exploited? Kev Ford (Jul 28)
- Re: eSafe: Could this be exploited? Nick FitzGerald (Jul 31)