Overview
CVE-2025-13785 describes a medium severity information disclosure vulnerability found in yungifez Skuul School Management System up to version 2.6.5. The vulnerability resides in the image handler component’s processing of the /user/profile file. A remote attacker can exploit this issue to potentially gain access to sensitive user information. The vendor has been contacted, but there has been no response.
Technical Details
The vulnerability exists due to insufficient input validation and sanitization when handling image uploads or processing profile information via the /user/profile endpoint. An attacker can manipulate image parameters or other profile-related data sent to this endpoint, leading to the disclosure of unintended information. The specific method of exploitation is related to how the system processes image data or associated metadata. The public exploit details how malformed image data can trigger the system to leak information it should not normally expose.
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) score for CVE-2025-13785 is 4.3 (MEDIUM).
- Attack Vector: Network (AV:N)
- Attack Complexity: Low (AC:L)
- Privileges Required: None (PR:N)
- User Interaction: None (UI:N)
- Scope: Unchanged (S:U)
- Confidentiality Impact: Low (C:L)
- Integrity Impact: None (I:N)
- Availability Impact: None (A:N)
This score reflects the ease of exploitation and the potential for information disclosure. Although no integrity or availability impact is present, the confidentiality breach is still significant.
Possible Impact
Successful exploitation of this vulnerability can lead to the following:
- Disclosure of user profile information such as names, email addresses, contact details, and potentially more sensitive data depending on the system’s data storage practices.
- Possible use of leaked information for phishing attacks or social engineering.
- Potential for further exploitation if the disclosed information reveals details about the system’s architecture or configuration.
Mitigation or Patch Steps
Unfortunately, given the vendor’s lack of response, a formal patch is unlikely at this time. We recommend the following mitigation steps:
- Upgrade: If a newer version of Skuul School Management System becomes available, upgrade immediately after testing it in a staging environment.
- Input Validation: Implement strict input validation and sanitization on all user-supplied data, especially for the
/user/profileendpoint. Specifically, validate image types, sizes, and content. - Web Application Firewall (WAF): Deploy a Web Application Firewall (WAF) with rules configured to detect and block suspicious requests targeting the
/user/profileendpoint. - Rate Limiting: Implement rate limiting to restrict the number of requests from a single IP address, which can help mitigate brute-force attempts to exploit the vulnerability.
- Monitor Logs: Regularly monitor application logs for suspicious activity, especially errors related to image processing or profile handling.
