ClamAV 0.65 problem with Oversized zips

Plant, Dean dean.plant at ROKE.CO.UK
Thu Nov 13 13:37:06 GMT 2003

Below is a problem and resolution for ClamAV v0.65 reporting some zip files as oversized zip files.

Hope this is of some help.

Dean Plant

"Plant, Dean" <dean.plant at> wrote:

> Hello,
> I have just upgraded to ClamAV 0.65 on RH8.0 and have found that it is
> reporting a valid zip file as an Oversized Zip. The 50K zip file
> contains 2 1,487K bitmap files. Is there any reason why this should be
> happening v0.60 had no problems with this file.
> ./ Oversized Zip FOUND

Please edit libclamav/scanners.c, the line 64:

#define ZIPOSDET 20 /* FIXME: Make it user definable */

and increase the value to 50.

Best regards,
Tomasz Kojm

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