JPEG: Danger also with xnview?

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Lasse
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JPEG: Danger also with xnview?

Post by Lasse » Wed Sep 29, 2004 6:04 pm

Hello!

These days, there was a Microsoft-Bug with JPEG-Images, who can
cause a buffer overflow and insert some code.

What happens, if such a manupulated JPEG-Image is opened with xnview?

No danger at all? Or depends it on the windows-version?

Regards,
Lasse

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xnview
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Re: JPEG: Danger also with xnview?

Post by xnview » Wed Sep 29, 2004 6:24 pm

Lasse wrote:These days, there was a Microsoft-Bug with JPEG-Images, who can
cause a buffer overflow and insert some code.
What happens, if such a manupulated JPEG-Image is opened with xnview?
No danger at all? Or depends it on the windows-version?
I don't think that there is a problem, because microsoft don't use the same library, and if you open a such jpeg with xnview, what's happened? Nothing, only perhaps a crash of xnview.
Pierre.

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MaierMan
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Post by MaierMan » Wed Sep 29, 2004 10:37 pm

Tested with sample found at:
http://www.easynews.com/virus.html

With XNView 1.70 you simply see the regular jpeg-file-icon (no thumb).
You cannot open it with xnview... Says that the format cannot be determined.
The image itself doesnt contain valid image data for what I read. Thus its correct that nothing was displayed.
No crashes.

I dont think Pierre just copied pretty old Netscape code.
Thus no bug ;)
(While MS seems to have done exactly this :P).

PS: Norton Antivirus 2004 was found it via auto-protect...
Saying it was found thru Bloodhound.

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helmut
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Post by helmut » Thu Sep 30, 2004 8:30 pm

MaierMan wrote:Tested with sample found at:
http://www.easynews.com/virus.html
...
Maierman, thank you very much for testing this and letting us know.

Gruß, Helmut

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