CVE-2021-20667 : Vulnerability Insights and Analysis
Learn about CVE-2021-20667, a stored cross-site scripting vulnerability in GROWI versions v4.2.2 and earlier. Understand the impact, technical details, and mitigation steps involved.
A stored cross-site scripting vulnerability in GROWI versions v4.2.2 and earlier allows remote authenticated attackers to inject arbitrary scripts. This CVE poses a risk due to inadequate Content Security Policy (CSP) configurations.
Understanding CVE-2021-20667
This section provides an overview of the CVE-2021-20667 vulnerability in GROWI.
What is CVE-2021-20667?
CVE-2021-20667 is a stored cross-site scripting vulnerability in GROWI software versions v4.2.2 and earlier. It enables remote authenticated attackers to inject malicious scripts through specially crafted content.
The Impact of CVE-2021-20667
The impact of this vulnerability is significant as it allows attackers to execute arbitrary scripts within the context of the user's session, potentially leading to unauthorized actions and data theft.
Technical Details of CVE-2021-20667
In this section, we delve into the technical aspects of CVE-2021-20667.
Vulnerability Description
The vulnerability arises from insufficient CSP settings in GROWI versions v4.2.2 and earlier, facilitating the injection of malicious scripts by authenticated attackers.
Affected Systems and Versions
GROWI versions v4.2.2 and earlier are specifically affected by this vulnerability, putting users of these versions at risk.
Exploitation Mechanism
Remote authenticated attackers can exploit this vulnerability by inserting specially crafted content containing malicious scripts, taking advantage of the inadequate CSP configuration.
Mitigation and Prevention
To address CVE-2021-20667, immediate steps and long-term security practices are essential.
Immediate Steps to Take
Users are advised to apply security patches promptly, update to the latest GROWI version, and review and tighten CSP configurations to prevent script injections.
Long-Term Security Practices
Regular security audits, user input sanitization, and continuous monitoring for unusual activities can enhance overall security posture.
Patching and Updates
Keep GROWI software up to date with the latest security patches and releases to mitigate the risk posed by CVE-2021-20667.