CVE-2024-31552 identifies a path traversal vulnerability in CuteHttpFileServer version 3.1, enabling arbitrary file download from the server. This vulnerability arises due to insufficient validation or sanitization of user-supplied file path inputs, allowing attackers to traverse directories and access files outside the intended directory scope. Classified as CWE-22, this flaw can be exploited by an attacker with limited privileges on the server (local access or authenticated user with low privileges) without requiring any user interaction. The CVSS v3.1 score of 7.1 reflects high severity, primarily due to the high impact on confidentiality and integrity, as attackers can obtain sensitive files and potentially manipulate data. The attack vector is local, meaning the attacker must have some level of access to the server environment, but the low attack complexity and no user interaction make exploitation feasible once access is gained. No patches or fixes have been published yet, and no known exploits have been reported in the wild, but the vulnerability represents a significant risk if leveraged in targeted attacks. Organizations relying on CuteHttpFileServer 3.1 should be aware of this vulnerability and take immediate steps to mitigate risk while awaiting official patches.

The primary impact of CVE-2024-31552 is unauthorized disclosure of sensitive information due to arbitrary file download capabilities. Attackers exploiting this vulnerability can access configuration files, credentials, logs, or other sensitive data stored on the server, leading to confidentiality breaches. Integrity may also be affected if attackers use obtained information to further compromise the system or escalate privileges. Although availability is not directly impacted, the breach of confidentiality and integrity can lead to broader system compromise or data exfiltration. Organizations worldwide using CuteHttpFileServer 3.1 in environments where local or low-privilege access is possible are at risk. This includes internal networks, development environments, or any scenario where attackers might gain limited access. The absence of a patch and the ease of exploitation once access is obtained increase the threat level. Sensitive sectors such as government, finance, healthcare, and critical infrastructure that rely on this software for file serving are particularly vulnerable to data breaches and subsequent operational risks.

1. Restrict access to CuteHttpFileServer instances to trusted users only, employing strict network segmentation and access controls to minimize local or low-privilege access opportunities. 2. Implement file system permissions that limit the CuteHttpFileServer process to only necessary directories, preventing traversal to sensitive files. 3. Monitor server logs and file access patterns for unusual or unauthorized file download attempts, especially those involving directory traversal sequences (e.g., ../). 4. Use application-layer firewalls or intrusion detection systems configured to detect and block path traversal attack patterns targeting the file server. 5. Until an official patch is released, consider disabling or restricting the vulnerable file download functionality if feasible. 6. Conduct regular security audits and penetration testing focused on file path validation and access control mechanisms. 7. Educate system administrators about the vulnerability and the importance of minimizing privilege levels for users and services interacting with the file server. 8. Prepare to apply official patches promptly once available and verify their effectiveness through testing.