Re: Multiple Antivirus Scanners DoS attack. [summery]

[bipin gautam <visitbipin () yahoo com>]

> > * Windows Xp default ZIP manager [report's wrong
> size
> > of compress ZIP files.]
>
> if you mess with headers any compression API tells
> you 
> the same wrong size. Check zlib, infoZip, rar, arj. 
>
>
> There is no way to get detect these changes.
> Checking each file integrity 
> against the header info will take significiant
> anount of time. Anyway like 
> WinZIP the extraction routine seek file content
> until the the next header 
> stats.  So that the altered file size will not able
> to fool the routine i.e 
> Design Error.  

do you have any idea how i created these compressed
archive??? i didn't modified the header info!!!
i created it using dd if=/dev/zero ..............

It has been few reports F-Prot 4.4.2 for Linux has a problem!!!


        
                
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