CVE-2012-4734 in Best Practical
Summary
by MITRE
Request Tracker (RT) 3.8.x before 3.8.15 and 4.0.x before 4.0.8 allows remote attackers to conduct a "confused deputy" attack to bypass the CSRF warning protection mechanism and cause victims to "modify arbitrary state" via unknown vectors related to a crafted link.
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Analysis
by VulDB Data Team • 12/19/2021
The vulnerability identified as CVE-2012-4734 affects Request Tracker (RT) versions 3.8.x before 3.8.15 and 4.0.x before 4.0.8, representing a critical security flaw that undermines the application's cross-site request forgery (CSRF) protection mechanisms. This vulnerability falls under the category of confused deputy attacks, where an attacker manipulates the application's trust relationships to execute unauthorized actions. The flaw specifically targets the CSRF warning protection system, which is designed to prevent unauthorized modifications to application state by ensuring that requests originate from legitimate sources. When exploited, this vulnerability allows remote attackers to craft malicious links that can bypass the CSRF protection entirely, enabling them to perform unauthorized state modifications on behalf of authenticated users.
The technical implementation of this vulnerability stems from how RT handles authentication tokens and request validation mechanisms within its web interface. Attackers can construct specially crafted links that exploit the application's trust model, allowing them to manipulate the CSRF protection system without proper authentication. This confusion arises from the application's inability to properly validate the origin and authenticity of requests, particularly when dealing with complex state modification operations. The vulnerability's impact extends beyond simple data theft to full system compromise, as authenticated users can be tricked into executing malicious actions through social engineering techniques. The attack vector involves sending crafted links to victims who, upon clicking them, unknowingly perform actions that modify application state without proper authorization.
The operational impact of CVE-2012-4734 is severe and multifaceted, as it enables attackers to perform unauthorized modifications to any system state that requires authenticated access. This includes but is not limited to modifying user accounts, changing permissions, altering ticket information, and potentially gaining administrative privileges within the RT environment. The vulnerability's remote exploitation capability means that attackers can target users from anywhere on the internet without requiring physical access to the network. The confused deputy nature of this attack makes it particularly dangerous because it leverages legitimate application functionality against itself, making detection more challenging. Organizations using affected RT versions face significant risk of unauthorized access, data manipulation, and potential complete system compromise, especially in environments where RT serves as a central ticketing and issue tracking system.
Mitigation strategies for this vulnerability require immediate patching of affected RT installations to versions 3.8.15 or 4.0.8, which contain the necessary fixes for the CSRF protection mechanisms. Organizations should also implement additional security measures including thorough review of all user sessions and authentication tokens, monitoring for unusual state modification patterns, and implementing proper input validation and request origin verification. The fix addresses the root cause by strengthening the CSRF protection implementation and ensuring that all requests are properly validated against the originating source. Security teams should also consider implementing web application firewalls to detect and block suspicious request patterns, and conduct comprehensive security audits of their RT installations to identify any potential exploitation attempts. This vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery issues, and represents a clear violation of the principle of least privilege in web application security. The ATT&CK framework categorizes this as a privilege escalation technique, where attackers leverage application trust relationships to gain unauthorized access to system resources, making it a critical concern for organizations relying on RT for their ticketing and issue tracking operations.