CVE-2017-7881 Explained : Impact and Mitigation

BigTree CMS up to version 4.2.17 is vulnerable to a CSRF protection bypass, allowing remote attackers to evade security measures by manipulating the HTTP Referer header.

Understanding CVE-2017-7881

BigTree CMS's CSRF protection mechanism is flawed, enabling attackers to bypass security checks by inserting specific URIs in the HTTP Referer header.

What is CVE-2017-7881?

The vulnerability in BigTree CMS allows attackers to circumvent CSRF protection by including necessary URIs in the query string of an HTTP Referer header.

The Impact of CVE-2017-7881

This vulnerability permits remote attackers to bypass security measures, potentially leading to unauthorized access and other malicious activities.

Technical Details of CVE-2017-7881

BigTree CMS's vulnerability details and affected systems.

Vulnerability Description

The CSRF protection in BigTree CMS up to version 4.2.17 is susceptible to a bypass method that involves manipulating the HTTP Referer header.

Affected Systems and Versions

Product: BigTree CMS
Vendor: N/A
Versions: Up to 4.2.17

Exploitation Mechanism

The vulnerability allows attackers to bypass CSRF protection by inserting specific URIs in the query string of an HTTP Referer header.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2017-7881.

Immediate Steps to Take

Update BigTree CMS to the patched version (core/inc/bigtree/admin.php).
Monitor and restrict HTTP Referer headers to prevent unauthorized access.

Long-Term Security Practices

Implement strict input validation and sanitization mechanisms.
Regularly audit and update security protocols to address emerging threats.

Patching and Updates

Apply security patches promptly to address known vulnerabilities and enhance system security.