CVE-2018-19948 in Helpdesk
Summary
by MITRE
The vulnerability have been reported to affect earlier versions of Helpdesk. If exploited, this cross-site request forgery (CSRF) vulnerability could allow attackers to force NAS users to execute unintentional actions through a web application. QNAP has already fixed the issue in Helpdesk 3.0.3 and later.
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Analysis
by VulDB Data Team • 09/11/2020
This cross-site request forgery vulnerability in QNAP Helpdesk affects versions prior to 3.0.3 and represents a significant security risk for network-attached storage environments. The flaw allows attackers to exploit the web application's trust in authenticated users by crafting malicious requests that could execute unauthorized actions on behalf of legitimate users. The vulnerability specifically targets NAS (Network Attached Storage) users who interact with the Helpdesk web interface, creating a dangerous attack surface where unauthorized modifications or actions could be performed without user knowledge or consent.
The technical implementation of this CSRF flaw stems from the absence of proper validation mechanisms in the Helpdesk application's request processing. When users authenticate to the web interface, their session cookies are automatically included in subsequent requests, but the application fails to verify the origin or authenticity of these requests. This allows attackers to create malicious web pages or exploit existing vulnerabilities in other applications to submit forged requests that appear legitimate to the Helpdesk system. The vulnerability operates under CWE-352, which specifically addresses cross-site request forgery conditions where web applications fail to validate that requests originate from legitimate sources.
The operational impact of this vulnerability extends beyond simple data manipulation, as it could enable attackers to perform critical administrative functions within the Helpdesk system. Attackers could potentially modify user accounts, reset passwords, create new user permissions, or execute other actions that compromise the integrity and availability of the helpdesk service. Given that NAS systems often contain sensitive organizational data, this vulnerability could facilitate broader security breaches within network environments. The attack vector typically involves social engineering techniques where users are tricked into visiting malicious websites that contain embedded CSRF payloads, making it particularly dangerous in enterprise environments where user awareness may be limited.
Organizations should immediately upgrade to Helpdesk version 3.0.3 or later to remediate this vulnerability, as QNAP has specifically addressed the issue through proper implementation of CSRF tokens and request validation mechanisms. The fix involves implementing anti-CSRF tokens that are generated per session and validated on each request, ensuring that requests originate from legitimate user interactions with the application. Additional mitigations include implementing proper content security policies, enforcing strict origin validation, and conducting regular security assessments of web applications. This vulnerability aligns with ATT&CK technique T1566 which covers social engineering tactics, particularly focusing on the manipulation of user interactions through malicious web content to achieve unauthorized access to systems.