CVE-2024-2052 in Easergy T200I
Summary
by MITRE • 03/18/2024
CWE-552: Files or Directories Accessible to External Parties vulnerability exists that could allow unauthenticated files and logs exfiltration and download of files when an attacker modifies the URL to download to a different location.
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Analysis
by VulDB Data Team • 03/18/2024
The vulnerability identified as CVE-2024-2052 represents a critical access control flaw classified under CWE-552, which specifically addresses files or directories accessible to external parties. This weakness occurs when applications fail to properly restrict access to sensitive resources, allowing unauthorized users to gain access to files and directories that should remain protected. The vulnerability manifests through improper authorization mechanisms that permit attackers to bypass normal access controls by simply modifying URL parameters to access restricted content.
The technical implementation of this flaw typically involves web applications that do not adequately validate user permissions or implement proper access controls when processing file download requests. When an application accepts user-supplied input to determine file paths or locations, and fails to properly sanitize or validate this input, it creates an opportunity for attackers to manipulate the URL structure to access unintended resources. This can include system logs, configuration files, source code repositories, or other sensitive data that should remain inaccessible to unauthenticated users.
The operational impact of CVE-2024-2052 extends beyond simple data exposure, as it can lead to comprehensive system compromise through information disclosure. Attackers can leverage this vulnerability to exfiltrate sensitive files, potentially including database credentials, application configuration details, and system logs that contain valuable information for further exploitation. The vulnerability's classification under CWE-552 aligns with the broader category of insecure direct object references, which is frequently mapped to ATT&CK technique T1213.002 for credential dumping and T1083 for file and directory discovery. The ability to download arbitrary files without authentication creates a pathway for attackers to gather intelligence about the target system, potentially leading to privilege escalation or lateral movement within the network infrastructure.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and access control mechanisms throughout the application architecture. Developers must ensure that all file access operations validate user permissions before granting access to requested resources, implementing proper authorization checks that verify the requesting user's entitlements. The implementation of parameterized queries and secure file access patterns can prevent attackers from manipulating URL parameters to access unauthorized resources. Organizations should also consider implementing web application firewalls to detect and block suspicious URL modification attempts, while establishing comprehensive logging and monitoring systems to identify potential exploitation attempts. Additionally, regular security testing including penetration testing and code reviews should be conducted to identify and remediate similar access control vulnerabilities across the application portfolio, ensuring that the principle of least privilege is maintained for all file access operations.