CVE-2022-1718 in trudesk
Summary
by MITRE • 09/29/2022
The trudesk application allows large characters to insert in the input field "Full Name" on the signup field which can allow attackers to cause a Denial of Service (DoS) via a crafted HTTP request in GitHub repository polonel/trudesk prior to 1.2.2. This can lead to Denial of service.
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Analysis
by VulDB Data Team • 10/25/2022
The trudesk application suffers from a denial of service vulnerability identified as CVE-2022-1718 that stems from inadequate input validation in the signup form's "Full Name" field. This vulnerability exists in versions prior to 1.2.2 of the application and represents a classic buffer overflow or input length manipulation issue that can be exploited by malicious actors to disrupt service availability. The vulnerability is particularly concerning as it allows attackers to craft specific HTTP requests that can trigger system instability through excessive character input.
The technical flaw manifests when the application fails to properly sanitize or limit the length of user input in the Full Name registration field. Attackers can submit unusually long character sequences that exceed the application's expected input parameters, potentially causing memory allocation issues or triggering internal processing errors that result in application crashes or unresponsiveness. This type of vulnerability falls under CWE-122 which specifically addresses buffer overflow conditions where insufficient bounds checking allows for memory corruption. The application's failure to implement proper input length validation creates an attack surface that can be leveraged to exhaust system resources or cause unexpected behavior in the web application's processing pipeline.
The operational impact of this vulnerability extends beyond simple service disruption as it can lead to complete system unavailability for legitimate users attempting to register or access the application. When exploited, the denial of service condition can affect the entire application infrastructure, potentially causing cascading failures if the application is part of a larger system architecture. The vulnerability can be particularly damaging in production environments where user registration is a critical function, as it directly impacts the application's ability to serve legitimate users while potentially creating opportunities for further exploitation attempts. The attack vector through crafted HTTP requests makes this vulnerability easy to exploit and can be automated, increasing the potential for sustained service disruption.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and sanitization mechanisms within the application's data processing layers. The recommended approach involves enforcing strict character limits on all user input fields, particularly those that are susceptible to manipulation such as name fields, and implementing proper boundary checking before processing user data. Organizations should immediately upgrade to trudesk version 1.2.2 or later where this vulnerability has been addressed through proper input validation controls. Additional defensive measures include implementing rate limiting on registration requests, monitoring for unusual input patterns, and establishing proper error handling that prevents malformed input from causing application crashes. This vulnerability aligns with ATT&CK technique T1499 which covers network denial of service attacks, and proper mitigation requires adherence to secure coding practices that prevent buffer overflows and input validation failures. The fix should include comprehensive testing of input boundaries and implementation of defensive programming techniques that ensure the application maintains stability even when processing unexpected or malicious input data.