Description:

CVE-2024-0303 is a critical vulnerability found in Youke365 up to version 1.5.3. It allows server-side request forgery (SSRF) attacks by manipulating the 'url' argument in the '/app/api/controller/caiji.php' file. This vulnerability can be exploited remotely, and the exploit has been publicly disclosed.

Key Insights:

1. High Severity: The SVRS score of 67 indicates a high severity level, highlighting the urgency of addressing this vulnerability. A score above 80 would signify a critical vulnerability requiring immediate action.

2. SSRF Attacks: This vulnerability enables attackers to perform SSRF attacks, allowing them to send crafted HTTP requests to internal systems or external resources on behalf of the affected server. This could lead to sensitive data exposure, unauthorized access, or even remote code execution.

3. Public Exploit: The exploit for this vulnerability has been publicly disclosed, making it more accessible to attackers. This increases the likelihood of exploitation attempts and emphasizes the need for immediate patching or mitigation measures.

4. Remote Exploitation: The vulnerability can be exploited remotely, making it easier for attackers to target vulnerable systems without requiring physical access or local network connectivity.

Mitigation Strategies:

1. Apply Software Updates: Organizations should prioritize patching or updating Youke365 to the latest version (1.5.4 or later) as soon as possible to address this vulnerability.

2. Implement Input Validation: Developers should implement robust input validation mechanisms to prevent malicious or malformed 'url' arguments from being processed by the application.

3. Enable Web Application Firewall (WAF): Organizations can deploy a WAF to block malicious HTTP requests and protect against SSRF attacks. The WAF should be configured to detect and block requests with suspicious patterns or characteristics.

4. Educate Employees: Organizations should educate employees about the risks of SSRF attacks and encourage them to be cautious when clicking on links or opening attachments from untrusted sources.

Additional Information:

• Threat Actors/APT Groups: There is no information available regarding specific threat actors or APT groups actively exploiting this vulnerability.

• Exploit Status: Active exploits have been published, increasing the risk of exploitation.

• CISA Warnings: The Cybersecurity and Infrastructure Security Agency (CISA) has not issued a warning for this vulnerability.

• In the Wild: There is no information available to confirm whether this vulnerability is actively exploited in the wild.

If users have additional queries regarding this incident, they can use the 'Ask to Analyst' feature, contact SOCRadar directly, or open a support ticket for more information if necessary.