CVE-2017-7725 : What You Need to Know
Learn about CVE-2017-7725 affecting Concrete5 8.1.0, allowing attackers to manipulate links and pose cross-site scripting risks. Find mitigation steps and patching details here.
Concrete5 8.1.0 caching feature vulnerability due to improper HTTP Host header handling.
Understanding CVE-2017-7725
What is CVE-2017-7725?
Concrete5 8.1.0 relies on the HTTP Host header for caching, potentially leading to cross-site scripting (XSS) if a canonical URL is not specified during installation.
The Impact of CVE-2017-7725
- Attackers can manipulate links displayed to visitors, posing an XSS risk.
Technical Details of CVE-2017-7725
Vulnerability Description
Concrete5 8.1.0 incorrectly trusts the HTTP Host header during caching, allowing attackers to set arbitrary domains for certain links.
Affected Systems and Versions
- Product: Concrete5 8.1.0
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
- Attackers send a GET request with any domain name in the Host header to store information for future manipulation.
Mitigation and Prevention
Immediate Steps to Take
- Define a canonical URL during Concrete5 installation.
- Regularly monitor and sanitize input data to prevent XSS attacks.
Long-Term Security Practices
- Implement Content Security Policy (CSP) to mitigate XSS risks.
- Educate administrators on secure installation practices.
Patching and Updates
- Apply patches provided by Concrete5 to address the vulnerability.