CVE-2023-5259 in ForU
Summary
by MITRE • 10/25/2023
A vulnerability classified as problematic was found in ForU CMS. This vulnerability affects unknown code of the file /admin/cms_admin.php. The manipulation of the argument del leads to denial of service. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The identifier of this vulnerability is VDB-240868.
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Analysis
by VulDB Data Team • 10/25/2023
The vulnerability identified as CVE-2023-5259 represents a denial of service flaw within ForU CMS that specifically targets the administrative interface component. This issue manifests in the /admin/cms_admin.php file where manipulation of the del argument creates a condition that can disrupt normal service operations. The vulnerability's classification as problematic indicates significant risk to system availability and operational continuity, particularly when considering that the attack vector is remotely exploitable. The fact that this vulnerability has been publicly disclosed and is known to be actively used in the wild elevates the immediate threat level for affected systems. The rolling release model employed by ForU CMS complicates remediation efforts as there are no clear version identifiers for either affected or patched releases, making it difficult for administrators to determine their system's vulnerability status or track appropriate updates. This lack of version clarity is particularly concerning in cybersecurity contexts where precise version tracking is essential for vulnerability management and patch deployment strategies.
The technical implementation of this denial of service vulnerability appears to stem from inadequate input validation and sanitization within the administrative php file. When an attacker manipulates the del argument, the system likely fails to properly handle the malformed input, potentially leading to resource exhaustion, infinite loops, or other conditions that prevent legitimate administrative operations from completing successfully. This type of vulnerability aligns with CWE-400, which covers "Uncontrolled Resource Consumption" and represents a common class of denial of service flaws where insufficient validation allows attackers to consume system resources or trigger operational failures. The remote exploitability suggests that the vulnerability exists within a network-accessible interface, meaning that attackers do not require physical access or local privileges to compromise the system. The administrative context of the affected file indicates that successful exploitation could potentially lead to more severe consequences beyond simple service disruption, including unauthorized access to administrative functions if additional vulnerabilities exist within the same codebase.
The operational impact of CVE-2023-5259 extends beyond immediate service disruption to encompass broader organizational risks including potential data integrity compromise and extended downtime. Organizations running ForU CMS systems face the challenge of maintaining service availability while dealing with a vulnerability that lacks clear remediation guidance due to the rolling release model. The public disclosure status of this exploit means that threat actors can readily implement attacks without requiring advanced technical skills or specialized knowledge. For security teams, this vulnerability creates an urgent remediation priority as the exploit is already in active use within the threat landscape. The rolling release nature of the product creates additional complexity in vulnerability management, as administrators cannot simply identify a specific vulnerable version and apply a targeted patch. This situation forces security professionals to consider broader system hardening approaches and potentially implement network-level mitigations while waiting for more precise patch information.
Mitigation strategies for CVE-2023-5259 should focus on immediate protective measures given the public availability of the exploit and the lack of specific version information. Network segmentation and access controls should be implemented to restrict access to the administrative interface, particularly limiting exposure to trusted networks only. Web application firewalls can provide additional protection by filtering suspicious input patterns targeting the del argument parameter. Security teams should also consider implementing monitoring and alerting for unusual access patterns to the /admin/cms_admin.php endpoint. The rolling release model suggests that organizations should implement continuous monitoring for new releases and security patches, even when specific vulnerability details are unclear. Additionally, regular backups and incident response procedures should be activated to ensure rapid recovery capabilities if the vulnerability is successfully exploited. Organizations should also review their patch management processes to accommodate the challenges posed by rolling release models, potentially implementing more frequent security assessments and vulnerability scanning to identify similar issues within the codebase. This vulnerability demonstrates the importance of maintaining comprehensive security posture even when specific patch information is unavailable, emphasizing the need for proactive threat hunting and defensive security measures.