CVE-2010-2114 in pbx
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability in pbx/gate in Brekeke PBX 2.4.4.8 allows remote attackers to hijack the authentication of users for requests that change passwords via the pbxadmin.web.PbxUserEdit bean.
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Analysis
by VulDB Data Team • 09/14/2017
The CVE-2010-2114 vulnerability represents a critical cross-site request forgery flaw discovered in the Brekeke PBX 2.4.4.8 telephony system. This vulnerability resides within the pbx/gate component and specifically targets the pbxadmin.web.PbxUserEdit bean functionality, which handles user account modifications including password changes. The flaw enables remote attackers to exploit the system's authentication mechanisms by tricking authenticated users into executing unauthorized actions without their knowledge or consent.
This CSRF vulnerability operates by leveraging the trust relationship between the web application and the user's browser. When an authenticated user visits a malicious website or clicks on a crafted link, the attacker can construct requests that automatically submit to the Brekeke PBX system using the user's existing session cookies. Since the system does not implement proper anti-CSRF token validation for password change operations, the malicious request appears legitimate to the server and executes with the privileges of the authenticated user. The vulnerability specifically affects the password modification functionality, making it particularly dangerous as it could allow attackers to completely compromise user accounts and gain unauthorized access to the telephony system.
The operational impact of this vulnerability extends beyond simple credential theft, as it provides attackers with direct access to the PBX administration interface and user management functions. Successful exploitation could enable attackers to modify user accounts, create new administrator accounts, or manipulate call routing configurations. The vulnerability affects the entire user base of the affected Brekeke PBX installation, as any authenticated user could become a victim of such attacks. Organizations using this version of Brekeke PBX face significant risk of unauthorized access to their communication infrastructure, potentially leading to eavesdropping, call manipulation, or complete system compromise. This vulnerability particularly threatens businesses relying on Brekeke PBX for voice communication services, as it could lead to unauthorized access to sensitive business communications and potential regulatory compliance violations.
The technical flaw stems from the absence of anti-CSRF protection mechanisms within the pbxadmin.web.PbxUserEdit bean implementation. According to CWE-352, this vulnerability maps directly to Cross-Site Request Forgery, where the application fails to validate that requests originate from legitimate sources. The ATT&CK framework categorizes this as a privilege escalation technique under T1548.001, where an attacker leverages existing authenticated sessions to perform unauthorized actions. Organizations should immediately update to a patched version of Brekeke PBX that implements proper CSRF token validation for all state-changing operations. Additionally, implementing Content Security Policy headers, using anti-CSRF tokens for all user-modification functions, and conducting regular security audits of web applications can help prevent similar vulnerabilities. Network segmentation and monitoring of authentication-related activities should also be implemented to detect and respond to potential exploitation attempts. The vulnerability highlights the critical importance of implementing proper input validation and session management in web applications, particularly those handling sensitive administrative functions.