CVE-2022-31110 : What You Need to Know

RSSHub, an open-source RSS feed generator developed by DIYgod, was found to have a Denial of Service (DoS) vulnerability in commits prior to 5c4177441417. This vulnerability allowed attackers to pass special values to certain parameters, leading to high CPU usage and impacting server performance and RSSHub services.

Understanding CVE-2022-31110

RSSHub experienced a vulnerability that could cause a denial of service by passing specific values to certain parameters in versions prior to 5c4177441417.

What is CVE-2022-31110?

CVE-2022-31110 is a DoS vulnerability in RSSHub versions before 5c4177441417, allowing attackers to cause high CPU usage and impact server performance.

The Impact of CVE-2022-31110

The vulnerability could result in a denial of service, affecting the availability of servers and RSSHub services.

Technical Details of CVE-2022-31110

The vulnerability in RSSHub was rated with a CVSS base score of 5.3, indicating a medium severity issue.

Vulnerability Description

In RSSHub versions before 5c4177441417, passing special values to the

filter

and

filterout

parameters could lead to high CPU usage and a DoS condition.

Affected Systems and Versions

RSSHub versions prior to commit 5c4177441417 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by passing specific values to the vulnerable parameters, triggering high CPU usage and impacting service availability.

Mitigation and Prevention

To address CVE-2022-31110, users are advised to upgrade their RSSHub installations to commit 5c4177441417 or newer.

Immediate Steps to Take

Upgrade RSSHub to commit 5c4177441417 or later to mitigate the vulnerability and prevent potential DoS attacks.

Long-Term Security Practices

Regularly update RSSHub to the latest version, apply security patches promptly, and monitor for any unusual activities on the server.

Patching and Updates

Stay informed about security advisories from RSSHub and promptly apply any patches or updates to ensure the security of your RSS feed generation services.