DCForum CGI az= field upload files
| dcforum-az-file-upload (6393) |  High Risk |
Description:
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".
Platforms Affected:
- DCScripts, DCForum 2000 1.0
Remedy:
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.
Consequences:
Gain Privileges
References:
- DCScripts Security Bulletin, March 31, 2001, All versions of DCForum at http://www.dcscripts.com/FAQ/sec_2001_03_31.html.
- qDefense Advisory QDAV-5-2000-1, DCForum allows remote read/write/execute at http://archives.neohapsis.com/archives/bugtraq/2001-04/0269.html.
- BID-2611: DCForum AZ Field Remote Command Execution Vulnerability
- CVE-2001-0437: upload_file.pl in DCForum 2000 1.0 allows remote attackers to upload arbitrary files without authentication by setting the az parameter to upload_file.
Reported:
Apr 16, 2001
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