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Opera Long Filename Extension Buffer Overflows
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Secunia Advisory:
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SA8691
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Release Date:
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2003-04-29
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Last Update:
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2003-05-12
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Popularity:
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16,490 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Opera 6.x
Opera 7.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Two vulnerabilities have been discovered in the Opera browser, which can be exploited by a malicious person to cause a DoS (Denial of Service) on a user's browser.
Both vulnerabilities are caused due to boundary errors in the handling of filename extensions and can be exploited by a malicious person by constructing a special HTML document, which will make the browser try to download a file with a long filename extension.
The first vulnerability will automatically cause a heap overflow overwriting arbitrary content with the user input converted to 16-bit wide chars.
The second vulnerability will display a download dialog box. If the user agrees to save the file, a stack overflow will be triggered overwriting certain registers (EBP and EIP) with the user input converted to 16-bit wide chars.
It may be possible to exploit the vulnerabilities to compromise a user's system. However, this has not been proven during research.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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