CVE-2020-13240 : What You Need to Know
Learn about CVE-2020-13240 affecting Dolibarr 11.0.4, allowing users to rename files with insecure extensions, bypassing XSS protection. Find mitigation steps here.
Dolibarr 11.0.4 allows users to rename uploaded files with insecure extensions, bypassing protection mechanisms against XSS.
Understanding CVE-2020-13240
What is CVE-2020-13240?
The DMS/ECM module in Dolibarr 11.0.4 enables users with specific permissions to manipulate file extensions, potentially leading to security vulnerabilities.
The Impact of CVE-2020-13240
This vulnerability allows malicious users to upload files with dangerous extensions, circumventing security measures and posing a risk of cross-site scripting attacks.
Technical Details of CVE-2020-13240
Vulnerability Description
The flaw in Dolibarr 11.0.4 permits users with 'Setup documents directories' permission to rename uploaded files with insecure extensions, evading protection against XSS.
Affected Systems and Versions
- Product: Dolibarr
- Version: 11.0.4
Exploitation Mechanism
- Attackers with the specified permission can manipulate file extensions, potentially executing malicious scripts.
Mitigation and Prevention
Immediate Steps to Take
- Restrict user permissions to prevent unauthorized file manipulation.
- Regularly monitor file uploads for suspicious activity.
Long-Term Security Practices
- Implement input validation to ensure file extensions adhere to secure standards.
- Educate users on safe file handling practices to mitigate risks.
Patching and Updates
- Apply patches or updates provided by Dolibarr to address this vulnerability.