DCForum CGI az= field upload files

dcforum-az-file-upload (6393) The risk level is classified as HighHigh Risk


DCForum could allow an attacker to upload files. A vulnerability in the hidden form field "az=" of the dcboard.cgi script in DCForum 2000 version 1 could allow a remote attacker to upload arbitrary files on the Web server. By default, a remote attacker can upload arbitrary files on the Web server by setting the hidden form field from "az=" to "az=upload_file".


Gain Privileges


Update the dcadmin.cgi, dcboard.cgi (other .cgi for pre DCF2K), dcforumlib.pl, and upload_file.pl (DCF2K and DCF6 only) as specified in the DCScripts Security Bulletin. See References.

As a workaround, patch dcboard.cgi to remove double dots and poison nulls.


Platforms Affected:

  • DCScripts DCForum 2000 1.0


Apr 16, 2001

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