Overview
The Common Vulnerabilities and Exposures (CVE) system has identified a critical vulnerability, designated CVE-2025-48201, in the ns_backup extension for TYPO3 up to its 13.0.0 version. This vulnerability is due to a predictable resource location, which can leave systems open to potential compromise or data leakage. TYPO3 is a widely used open-source content management system, and this vulnerability affects a significant number of websites globally. Given the severity score of 8.6, this vulnerability is of high concern and should be addressed promptly to prevent system compromise and potential data breaches.
Vulnerability Summary
CVE ID: CVE-2025-48201
Severity: High (CVSS 8.6)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
TYPO3 ns_backup extension | Up to 13.0.0
How the Exploit Works
The ns_backup extension for TYPO3 is vulnerable because it uses a predictable resource location. This means that an attacker, with knowledge of the system, can guess the location of resources or sensitive files. By predicting these locations, an attacker can potentially gain unauthorized access to these resources, leading to a system compromise or data leakage.
Conceptual Example Code
A conceptual example of how this vulnerability might be exploited can be seen in the following pseudocode:
GET /ns_backup/backup_file HTTP/1.1
Host: vulnerable.example.comIn this example, an attacker sends a GET request to the predictable resource location (`/ns_backup/backup_file`) in an attempt to access potentially sensitive backup files.
Countermeasures
To mitigate this vulnerability, apply the patch provided by the vendor as soon as it becomes available. In the meantime, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation. They can be configured to detect and block attempts to access the predictable resource locations, thus preventing potential exploitation of this vulnerability. It’s also recommended to regularly monitor system logs for any unusual activity.
If you have any further questions about CVE-2025-48201 or need assistance in applying the recommended countermeasures, do not hesitate to get in touch with our cybersecurity team.