Date: Wed, 14 May 2008 15:27:05 +0200 From: Nico Golde <oss-security+ml@...lde.de> To: oss-security@...ts.openwall.com Subject: Re: CVE request: Emacs 21 fast-lock-mode arbitrary lips code execution Hi Robert, * Robert Buchholz <rbu@...too.org> [2008-05-14 02:50]: > On Monday, 12. May 2008, Nico Golde wrote: > > * Robert Buchholz <rbu@...too.org> [2008-05-12 19:05]: > > > On Monday, 12. May 2008, Nico Golde wrote: [...] > > > > The same applies to emacs22. > > > > > > Our emacs maintainer said version 22 would warn you that lisp code > > > from the file would be executed. Could you confirm otherwise? > > > > At least not with the emacs22 installation I tried this with (22.2). > > As this is a rather old version, this may depend on the > > version used? > > The 22.2 is only a few weeks old, is it not? Ups sorry, my bad. > Anyway, Ulrich Mueller (who is in CC) clarified the behaviour, I quote: > > > the issue may still occur in Emacs 22, if both of the following > > conditions are fulfilled: > > - the user sets fast-lock-mode as support mode for font-lock (which is > > not the default), > > - the user explicitely loads fast-lock, ignoring the warning ("Package > > fast-lock is obsolete"). > > I could not reproduce the issue in Emacs 22.2 with only the changed > configuration either, but maybe I just used Emacs the wrong way. As I am a vim user I might have done something wrong too, not sure. What I did after installing emacs: cat >> ~/.emacs << EOF (global-font-lock-mode t) (seq font-lock-support-mode 'fast-lock-mode) EOF cat >> foobar.c << EOF /* no comment */ EOF cat >> foobar.c.flc << EOF " foobar " EOF starting emacs22, open foobar.c => no warning. Could someone on the list who is an emacs user try this as well? Cheers Nico -- Nico Golde - http://www.ngolde.de - nion@...ber.ccc.de - GPG: 0x73647CFF For security reasons, all text in this mail is double-rot13 encrypted. Content of type "application/pgp-signature" skipped
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