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Unchecked Buffer in Opera 7.02
From: "David F.Madrid" <conde0 () telefonica net>
Date: Mon, 7 Apr 2003 22:39:26 -0300 (ART)
Tested version : Opera 7.02 Build 2668 Vendor Status : Vendor was contacted on 8-4-2003 Description : Opera web browser has an unchecked buffer in his code that allow a malicious website to crash it and in certain circumstances , execute code with user priviliges . To reproduce the bug open this link http://usuarios.lycos.es/idoru/aaAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.zip Opera crashes with an access violation . Instruction pointer EIP is overwritten by the file name converted to unicode . That makes only possible to reference certain addresses in memory to execute . To place your code to execute in a valid address you have to assign it to an enviroment variable .That place your code in an address that can be referenced by EIP ( ~00010040 ) -- Regards , David F.Madrid Madrid , Spain _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- Unchecked Buffer in Opera 7.02 David F.Madrid (Apr 07)
- Re: Unchecked Buffer in Opera 7.02 I.R.van Dongen (Apr 08)
- Re: Unchecked Buffer in Opera 7.02 0164455001 (Apr 10)
- Re: Unchecked Buffer in Opera 7.02 I.R.van Dongen (Apr 08)