CVE-2021-21431 Explained : Impact and Mitigation
Learn about CVE-2021-21431 involving improper input validation in sopel-plugins.channelmgnt plugin versions < 2.0.1, impacting IRC servers. Explore the risks, affected systems, and mitigation steps.
Sopel-channelmgnt, a channel management plugin for Sopel, versions prior to 2.0.1 are affected by improper input validation. This vulnerability allows bypassing restrictions when kicking multiple users at once on certain IRC servers. The impact includes high availability impact, high integrity impact, and requires high privileges. Learn about the impact, affected systems, and mitigation steps below.
Understanding CVE-2021-21431
This section delves into the details of the CVE-2021-21431 vulnerability.
What is CVE-2021-21431?
CVE-2021-21431 involves improper input validation in sopel-plugins.channelmgnt plugin versions prior to 2.0.1, enabling bypassing of restrictions during user kicks on specific IRC servers.
The Impact of CVE-2021-21431
The vulnerability poses a high risk with a CVSS base score of 7.6, leading to significant availability and integrity impact, especially in environments with TARGMAX > 1.
Technical Details of CVE-2021-21431
Explore the technical aspects and implications of CVE-2021-21431.
Vulnerability Description
The flaw allows for bypassing bot removal restrictions when kicking multiple users at once on select IRC servers.
Affected Systems and Versions
sopel-plugins.channelmgnt versions prior to 2.0.1 are affected by this vulnerability.
Exploitation Mechanism
To exploit CVE-2021-21431, an attacker can kick multiple users simultaneously on specific IRC servers with the vulnerable plugin.
Mitigation and Prevention
Discover the steps to mitigate the risks associated with CVE-2021-21431.
Immediate Steps to Take
Upgrade to version 2.0.1 of sopel-plugins.channelmgnt to patch the vulnerability. Avoid using the plugin on networks where TARGMAX exceeds 1.
Long-Term Security Practices
Ensure timely plugin updates and regularly review security advisories for potential vulnerabilities in plugins.
Patching and Updates
Stay informed about security patches and updates for sopel-plugins.channelmgnt to protect systems from known vulnerabilities.