[webkit-dev] DOS in Safari/WebKit?
mjs at apple.com
Thu Dec 22 21:47:01 PST 2005
On Dec 22, 2005, at 6:48 PM, Kurt Kohler wrote:
> I haven't been following the chat room so I might have missed it, but
> I'm surprised there hasn't been any discussion here about the
> "denial of
> service" bug reported at the following URL.
> I don't want to jump to conclusions, but we're talking about open
> software here. He could have fixed it himself or at least filed a
> Bugzilla report. As far as I can tell he did neither. He does claim to
> have reported it to Apple. Is it in radar perhaps?
It is in Radar.
I don't recall ever getting proof of the "execute arbitrary code"
exploitability. We don't usually treat crashers as security bugs,
because then every reproducible crash would count as a security
exploit and that's not really reasonable given how many there are.
Can't comment on when/whether this will make it to a security update.
> I'll wait before I say what I think about this guy. I don't want to be
> slanderous without cause.
> BTW I saw a claim elsewhere that it had been fixed in the
> nightlies, but
> it looks like as of a few minutes ago ensureRows in TOT still has the
> problem (it does a resize with a value that doesn't appear to be
> against any limit).
We don't check against a hard limit but TOT will no longer crash or
overwrite memory (try it). We now detect the allocation failure. But
it might be good to also set a hard upper limit on rowspans.
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