CVE-2020-25788 : Security Advisory and Response

An issue was discovered in Tiny Tiny RSS (aka tt-rss) before 2020-09-16. imgproxy in plugins/af_proxy_http/init.php mishandles $_REQUEST["url"] in an error message.

Understanding CVE-2020-25788

This CVE involves a vulnerability in Tiny Tiny RSS related to how imgproxy handles user input.

What is CVE-2020-25788?

The vulnerability in Tiny Tiny RSS allows for mishandling of user-controlled data in an error message, potentially leading to security risks.

The Impact of CVE-2020-25788

The mishandling of user input in imgproxy could be exploited by attackers to execute malicious actions or gain unauthorized access.

Technical Details of CVE-2020-25788

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The issue arises from the improper handling of user-supplied data in the error message functionality of imgproxy in Tiny Tiny RSS.

Affected Systems and Versions

Product: Tiny Tiny RSS (tt-rss)
Versions affected: Before 2020-09-16

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the $_REQUEST["url"] parameter to trigger the mishandling of data in the error message.

Mitigation and Prevention

Protecting systems from CVE-2020-25788 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update Tiny Tiny RSS to the latest version to patch the vulnerability.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Implement input validation mechanisms to prevent similar vulnerabilities.
Conduct regular security audits and penetration testing.

Patching and Updates

Regularly apply security patches and updates to all software components to prevent known vulnerabilities.