CVE-2023-6689 in BCU 500
Summary
by MITRE • 12/20/2023
A successful CSRF attack could force the user to perform state changing requests on the application. If the victim is an administrative account, a CSRF attack could compromise the entire web application.
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Analysis
by VulDB Data Team • 01/13/2024
Cross-site request forgery represents a critical vulnerability that exploits the trust relationship between web applications and user browsers. This weakness allows attackers to manipulate authenticated users into executing unintended actions without their knowledge or consent. The vulnerability described in CVE-2023-6689 specifically targets the application's inability to properly validate the origin of requests, creating a pathway for malicious actors to bypass authentication mechanisms. When an administrative user interacts with a compromised application, the CSRF attack can result in complete system compromise as administrative privileges enable access to sensitive functions and data.
The technical flaw manifests in the application's failure to implement proper request validation mechanisms. This typically occurs when the web application does not verify that requests originate from legitimate sources within the same origin or when it fails to implement anti-CSRF tokens in state-changing operations. The vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications. Without proper protection mechanisms such as synchronizer tokens, origin checks, or same-site cookies, the application becomes vulnerable to exploitation. Attackers can craft malicious requests that appear to come from legitimate users, leveraging the browser's automatic handling of cookies and authentication tokens.
The operational impact of this vulnerability extends far beyond simple data theft or modification. When administrative accounts are targeted, the consequences can be catastrophic for organizational security posture. An attacker who successfully executes a CSRF attack against an administrator can perform critical operations such as changing user permissions, modifying system configurations, accessing sensitive data, or even deleting entire database records. The attack can result in unauthorized privilege escalation, data breaches, system compromise, and potential lateral movement within the network. This vulnerability essentially allows attackers to perform actions that would normally require direct administrative access, making it particularly dangerous for enterprise environments where administrative privileges are tightly controlled.
Effective mitigation strategies must address both the immediate technical flaw and broader security architecture considerations. The most recommended approach involves implementing robust anti-CSRF token mechanisms that are generated per session and validated on each state-changing request. These tokens should be unique, unpredictable, and properly associated with the user's session. Organizations should also implement proper origin validation checks and utilize same-site cookie attributes to prevent cross-site request forgery. Additionally, the implementation of Content Security Policy headers and proper session management can further reduce the attack surface. According to ATT&CK framework, this vulnerability maps to technique T1531 for 'Modify Existing Service' and T1078 for 'Valid Accounts', as it leverages legitimate administrative credentials to perform unauthorized operations. Regular security testing, including automated scanning and manual penetration testing, should be implemented to identify and remediate similar vulnerabilities across the application portfolio.