Microsoft said the series of vulnerabilities Stephen Fewer exploited at Pwn2Own to hack into Internet Explorer 8 have already been closed in Internet Explorer 9. Chrome, Firefox, Android and Windows 7 survived by default.
vulnerability in Internet Explorer 8 that researcher Stephen Fewer exploited at
the Pwn2Own hacking contest this week has already been fixed in Internet
Explorer, according to Microsoft.
the CanSecWest Pwn2Own challenge, Fewer chained three different vulnerabilities
to hack into IE8 on a fully patched Windows 7 machine. The attack also included
a way to escape the Protected Mode sandbox. Microsoft checked the release
candidate and RTM versions of Internet Explorer 9 and confirmed that the remote
code execution issue Fewer found does not exist in the latest version,
Microsoft said March 11.
ths vulnerability does not affect IE9, Microsoft encourages customers to take
advantage of the security improvements offered by the browser," Microsoft
said. Internet Explorer 9 is slated for final release on March 14. Microsoft
also confirmed two additional flaws used at Pwn2Own, but did not say if they
were also patched in IE9.
is looking at patching the earlier versions of Internet Explorer, but did not
say when the fixes will be released for those versions. The overwhelming
majority of users will either have to upgrade to the IE9 browser or keep
working with the unpatched browser and hope Microsoft gets around to patching
it or that someone else with malicious intent doesn't stumble upon the
Microsoft sticks to its existing timetable of patching its browser on
even-numbered months, then the first opportunity for the patch will be in April's
Patch Tuesday update.
contest rules, the vulnerabilities and exploits used at Pwn2Own are legally the
property of TippingPoint ZDI, the contest's sponsor. Researchers are forbidden
from publishing or in any way publicly disclosing the information. TippingPoint
provides all the information directly to the vendor and gives them six months
to fix the issue.
appreciate ZDI's practice of disclosing vulnerabilities directly to affected
software companies and the opportunity to continually improve the security of
Microsoft's products," the company said.
day of Pwn2Own
, a team of security researchers from the French penetration
test company VUPEN successfully exploited WebKit vulnerabilities in Safari to
compromise a 64-bit version of a fully patched Mac OS X running on a MacBook.
Fewer also hacked Internet Explorer on the same day. One researcher who signed
up to take on Google Chrome didn't show up, and the other team decided to skip
the contest in order to focus on the BlackBerry challenge on the following day.
team went on to successfully exploit multiple WebKit vulnerabilities on a
BlackBerry Torch 9800 on the second
day of Pwn2Own
. Charlie Miller, the researcher who'd won three previous
years in a row, won again by exploiting another bug in Apple iPhone's
MobileSafari browser. Ironically, the target iPhone was running iOS 4.2.1, not
the latest iOS 4.3 Apple released on March 9. However, TippingPoint determined
that the same bug existed in both versions, even though the exact exploit
wouldn't work because Apple had introduced a new layer of security onto the
Thomas, the researcher scheduled to take on Firefox on March 10, withdrew at
the last minute because his exploit was not stable, according to Jacinda Ann
Mein, a TippingPoint spokesperson.
"survivors" of the contest-Google Chrome, Android, Windows 7 and
Mozilla Firefox-were not compromised simply because no security researcher
attempted it on any of the three days of the contest.