[29731] in bugtraq
Re: Unchecked Buffer in Opera 7.02
daemon@ATHENA.MIT.EDU (nesumin)
Thu Apr 10 20:18:55 2003
Date: Thu, 10 Apr 2003 18:12:12 +0900
From: nesumin <nesumin@softhome.net>
To: "David F.Madrid" <conde0@telefonica.net>, bugtraq@securityfocus.com
In-Reply-To: <47969.80.58.4.235.1049766062.squirrel@www.vsantivirus.com>
Message-Id: <20030410180625.4613.NESUMIN@softhome.net>
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Hello,
I think it is known issue.
>> http://www.securityfocus.com/bid/7056
And vendor has already released "Opera 7.03 Build 2670".
They said that it is fixed-version for that issue.
Regards.
--------------------------------------------------
nesumin <nesumin@softhome.net>
-----Original Message-----
From: "David F.Madrid" <conde0@telefonica.net>
Sent: Mon, 7 Apr 2003 22:41:02 -0300 (ART)
To: <bugtraq@securityfocus.com>
Subject: Unchecked Buffer in Opera 7.02
> 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
>
>
