Local PHP File Inclusion in FluxBB

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Advisory ID:	HTB23246
Product:	FluxBB
Vendor:	FluxBB
Vulnerable Versions:	1.5.7 and probably prior
Tested Version:	1.5.7
Advisory Publication:	December 31, 2014 [without technical details]
Vendor Notification:	December 31, 2014
Vendor Fix:	January 23, 2015
Public Disclosure:	January 28, 2015
Latest Update:	January 23, 2015
Vulnerability Type:	PHP File Inclusion [CWE-98]
CVE Reference:	CVE-2014-9574
Risk Level:	High

CVSSv2 Base Score:	7.6 (AV:N/AC:H/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 FluxBB, which can be exploited to compromise vulnerable system. 1) Local PHP File Inclusion in FluxBB: CVE-2014-9574 The vulnerability exists due to absence of filtration of the "install_lang" HTTP GET parameter before including PHP files using the "require()" PHP function in "/install.php" script. The installation script "/install.php" remains on the system after installation by default and is accessible to anonymous users. A remote attacker can include and execute arbitrary "install.php" file from any directory on the server using directory traversal (e.g. "../") sequences. This may result in arbitrary PHP code execution and full system compromise. A simple PoC below will include and execute "/tmp/install.php" script: http://fluxbb/install.php?install_lang=../../../../../tmp/ Successful exploitation requires that attacker is able to plant a malicious "install.php" file on the system.
How to Detect PHP File Inclusion Vulnerabilities Website Security Test GDPR & PCI DSS Test Website CMS Security Test CSP & HTTP Headers Check WordPress & Drupal Scanning Try For Free Solution:
Update to FluxBB 1.5.8 More Information: https://fluxbb.org/forums/viewtopic.php?id=8203

References:
[1] High-Tech Bridge Advisory HTB23246 - https://www.immuniweb.com/advisory/HTB23246 - Local PHP File Inclusion in FluxBB. [2] FluxBB - http://fluxbb.org/ - FluxBB is fast, light, user-friendly forum software for your website. [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® - 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.

Previous Security Advisories with CWE-98:

HTB23238: Multiple vulnerabilities in EspoCRM

HTB23172: Multiple Vulnerabilities in X2CRM

104.6k
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