Re: Another Netscape Bug (and possible security hole)

[Laurent Demailly <dl@hplyot.obspm.fr>]

Douglas Barnes writes:
 > Spent too much time last night playing with the Netscape bug;
 > among other things wrote some code to throw various random binary
 > URLs at Netscape. Netscape seems prepared to swallow the bait
 > as long as the URL does _not_ contain characters screened as
 > follows:
 >  if ((c != '"') && (c!='>') && (c!=0) && (c!='/') ) {
 > This means you can't plant 0x00, 0x22, 0x3e or 0x2f.

No, you *can* put 0x22, 0x3e and 0x2f by using respectively
" > and / html constructs  (&#nnn; nn decimal ascii code)
unfortunatly � is not recognized but you can probaly use any number
substracted by itself or even short lda#0 (depending on the cpu),...if
you need a zero,...(what for ?)

I hope this helps too, btw, anywone having contacts on the 8lgm folks?
they must have experience with that kind of stuff...

Uptodate infos kept on http://hplyot.obspm.fr/~dl/netscapesec/

It seems the anim is working on about every netscape around, except
one folk on linux that reported it didn't crash though someone else,
on linux too said it crashed...

Even if a patch should be availble now, making a demonstration is
still interesting IMO [specially when you know that there are still
ppl around using netscape 0.9x beta, and even ppl 'selling' it in ISP
access packages!...]

dl

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Laurent Demailly * http://hplyot.obspm.fr/~dl/ * Linux|PGP|Gnu|Tcl|...  Freedom
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