Vendor: Happycgi.com
Product: Happymall
Versions: 4.3, 4.4
Title: Happymall E-Commerce Input Validation Flaw Lets Remote Users Execute Arbitrary Commands
Description: Revin Aldi reported an input validation vulnerability in the Happymall e-commerce software. Two scripts allow remote users to execute arbitrary commands with the privileges of the web server.
The 'normal_html.cgi' script does not filter user-supplied input before making an open() call based on that input. A remote user can create a specially crafted URL to cause the system to execute arbitrary operating system commands.
A demonstration exploit is provided:
/shop/normal_html.cgi?file=|id|
/shop/normal_html.cgi? file=;id|
The vendor reports that the 'member_html.cgi' script is also affected.
Impact: A remote user can execute arbitrary shell commands with the privileges of the target web server.
Solution: The vendor has issued a fix. See the attached CERT-KR advisory for more information.
Credit: revin aldi (reVn@minangCrew.Web.Ma) discovered and reported this flaw to SecurityTracker and sends Greetz to #MinangCrew at Dal.Net
CVE: CAN-2003-0243
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0243
Timeline:
Apr 26, 2003 Reported to SecurityTracker Apr 27, 2003 Vendor contacted (via English language e-mail, without response) Apr 29, 2003 CERTCC-KR initially contacted May 2, 2003 Details of vulnerability provided to vendor May 3, 2003 CERTCC-KR Advisory published
Distribution: The above SecurityTracker text is Copyright 2003 by SecurityGlobal.net LLC but can be redistributed without restrictions.
Additional Information: The CERTCC-KR advisory is shown below.
============================================== KA-2003-33: The Vulnerability of File Open Function in Happymall, an application of e-commerce. ---------------------------------------------- Published : May 03, 2003 Updated : May 03, 2003 Reference : http://www.certcc.or.kr
-- Systems Affected -------- All web servers running Happymall version 4.3 and 4.4 only
-- Impact -------- The normal_html.cgi and member_html.cgi script of Happymall allow a remote user to execute arbitrary operating system commands on the web server with the privilege of web server.
-- Description ----------------- Happymall is an application being used in some e-commerce sites. Following is what the problem is.
1. If you open normal_html.cgi or member_html.cgi you can find that
there is a sentence, open (A ,"$admin_path/normal_html/$END{'file'}") or
die print "$END{'file'}, which happens to perl programming from time to time.2. $END{'file'} is looking for file itself in the server to get the value of file.
3. A Remote user possibly exploits a system running Happymall using this vulnerability only when the value of file is system function.
-- Solution -------------------------- Apply Patch downloaded from : http://happymall.happycgi.com/forum/forum_detail.cgi?thread=353
How to apply patch to the system :
1. Extract zip file downloaded and you will get two files, member_html.cgi and normal_html.cgi.
2. Upload those files with ASCII mode to the web server in the directory containing index.cgi and overwrite.
3. Change the linked address For example; Before patch applied : http://test6.happycgi.com/normal_html.cgi?file=company.html After patch applied : http://test6.happycgi.com/normal_html.cgi?file=company
-- Reference Sites -------------------------- http://www.certcc.or.kr http://happymall.happycgi.com --------------------------------------------
-------------------------------------------------------------- Korea Information Security Agency, KISA Computer Emergency Response Team Coordination Center, CERTCC-KR Hot Line: 02-118 Email: cert@certcc.or.kr ==============================================================
