A vulnerability was found in dayrui XunRuiCMS 4.6.3. It has been classified as critical. Affected is the function import_add of the file dayrui/Fcms/Control/Admin/Linkage.php. The manipulation leads to deserialization. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
This vulnerability allows attackers to exploit the deserialization process, which can lead to unauthorized access or manipulation of data within the affected system. The urgency for defenders is heightened, as exploitation can occur remotely with minimal privileges.
Organizations should prioritize patching immediately to prevent any potential misuse of this vulnerability. Failure to address this issue could result in significant risks, including data breaches and system integrity compromises.
The vulnerability has been assigned a CVSS score of 5.3, indicating a medium severity level. However, the potential impact can escalate due to the public availability of the exploit and the nature of the vulnerability.
As such, organizations utilizing XunRuiCMS 4.6.3 are strongly encouraged to assess their systems for this vulnerability and implement the necessary updates.
Vulnerability Details
The vulnerability affects the function import_add of the XunRuiCMS product, specifically version 4.6.3. Its classification falls under the Common Weakness Enumeration (CWE) identifiers CWE-20 (Improper Input Validation) and CWE-502 (Deserialization of Untrusted Data).
The CVSS score of 5.3 indicates a medium severity level, suggesting that while the vulnerability has a moderate potential for exploitation, the implications can still be serious depending on the context and environment.
The vulnerability was published on February 11, 2025, and has been assessed as part of an analyzed status.
Technical Analysis
The root cause of the vulnerability lies in improper input validation during the deserialization process. Attackers may leverage this weakness to manipulate serialized data structures, potentially leading to arbitrary code execution or unauthorized access.
The attack vector is network-based, requiring minimal privileges to exploit, which increases the risk of successful attacks. User interaction is not required, further enhancing the vulnerability's potential for misuse.
The impacts on confidentiality, integrity, and availability are all low, but the overall risk remains significant due to the nature of the exploit. Organizations must ensure robust validation and sanitization mechanisms are in place to mitigate such vulnerabilities.
Risk & Impact Analysis
The real-world deployment risk of this vulnerability is notably high, considering its remote exploitability and the critical nature of the affected function.
Organizations must recognize that the blast radius could extend to sensitive data leakage or unauthorized administrative access, making it imperative to act swiftly.
Given the CVSS score and the low EPSS percentile, the urgency for remediation should be classified as 'medium.' Organizations should address this vulnerability in their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected product includes XunRuiCMS version 4.6.3. Organizations utilizing this version should take immediate action to remediate the vulnerability.
Mitigation & Remediation
Organizations should patch to the latest version of XunRuiCMS as soon as possible. If a patch is unavailable, consider implementing workarounds such as input validation and sanitization in the application logic.
Additionally, configuring network controls and monitoring for unusual activities can help mitigate potential exploitation of this vulnerability.
Penetration testing should be considered to validate the effectiveness of the remediation efforts.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized access, such as unusual requests to the import_add function.
Behavioral anomalies in user activity may indicate an attempt to exploit the vulnerability, and network signatures should be established to detect such patterns.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability is notable, as it highlights the recurring issue of deserialization vulnerabilities in web applications. Organizations should remain vigilant against such threats.
This incident reflects a trend in the exploitation of deserialization flaws, emphasizing the need for thorough security assessments in application development.
Security teams should leverage insights from this vulnerability to enhance their security posture, ensuring that preventive measures are in place to guard against similar vulnerabilities in the future.
Vulnerability management programs should be designed to include continuous monitoring and assessment to quickly identify and remediate new vulnerabilities.
Penetration testing methodologies also play a crucial role in ensuring that applications are secure against evolving threats.
API security best practices should be integrated into development lifecycles to prevent vulnerabilities like this.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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