Zip bomb?

[dorucrisan]

We are running some web shops, based on Prestashop platform. Zip and unzip of public_html directory from within DA File Manager is common practise. It always worked. Now, I created the zip file, but I cannot unzip, I get the error below, something about some zip bomb. I don't even know what is that. Store is running OK, no anomalies. I tried to unzip the archive on 3 different servers, with Intel or AMD CPU's. None works. Any ideea what might be and how can I instruct DA to unzip? Thanks,

 

[Richard G]

I don't even know what is that.

It's a malicous archive ment to overload the pc/server unpacking it during unpacking. It's also called decompression bomb.
I would most certainly not try to unpack this on a live production machine.

What you could do best is to copy the file to another machine, like your own pc or better test pc and try to unzip there.
If you have a Linux machine at home, don't use any tools, just use the unzip command.

However, I would advise against it, use at your own risk.

Best is to delete the file and find out how it got in there. Might be a leak in Prestashop, wouldn't be the first time.

 

[dorucrisan]

It's a malicous archive ment to overload the pc/server unpacking it during unpacking. It's also called decompression bomb.
I would most certainly not try to unpack this on a live production machine.

What you could do best is to copy the file to another machine, like your own pc or better test pc and try to unzip there.
If you have a Linux machine at home, don't use any tools, just use the unzip command.

However, I would advise against it, use at your own risk.

Best is to delete the file and find out how it got in there. Might be a leak in Prestashop, wouldn't be the first time.

Thanks for the reply but that is my zip file, created from within DA, from working shop on working server. It is nothing malicious It just refuse to unzip..

 

[Richard G]

Somethings must went wrong with zipping then.
Still... I would try to copy it to the pc and look if you can unzip it then with 7zip or something. Or install Winrar and you can also test zipfiles with that.

 

[dorucrisan]

Somethings must went wrong with zipping then.
Still... I would try to copy it to the pc and look if you can unzip it then with 7zip or something. Or install Winrar and you can also test zipfiles with that.

Thanks, I will try to copy the files as they are and then try to zip and unzip on PC. Will also try to unzio as you say, thanks again.