CVE-2021-21667 : Vulnerability Insights and Analysis
Learn about CVE-2021-21667, a stored cross-site scripting (XSS) vulnerability in Jenkins Scriptler Plugin 3.2 and earlier versions, enabling attackers to execute XSS attacks. Find mitigation strategies here.
Jenkins Scriptler Plugin 3.2 and earlier versions are vulnerable to stored cross-site scripting (XSS) due to unescaped parameter names in job configuration forms. This can be exploited by attackers with Scriptler/Configure permission.
Understanding CVE-2021-21667
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-21667.
What is CVE-2021-21667?
CVE-2021-21667 refers to a stored cross-site scripting vulnerability in Jenkins Scriptler Plugin, allowing malicious actors with specific permissions to execute XSS attacks.
The Impact of CVE-2021-21667
The vulnerability enables attackers with Scriptler/Configure permission to inject malicious scripts, potentially leading to unauthorized access or data theft.
Technical Details of CVE-2021-21667
Let's delve into the specifics of the vulnerability affecting Jenkins Scriptler Plugin.
Vulnerability Description
Jenkins Scriptler Plugin versions 3.2 and earlier fail to properly sanitize parameter names in job configuration forms, exposing them to XSS attacks.
Affected Systems and Versions
The vulnerability impacts Jenkins Scriptler Plugin versions less than or equal to 3.2, leaving them susceptible to stored XSS attacks.
Exploitation Mechanism
Attackers with Scriptler/Configure permission can exploit this vulnerability by inserting malicious scripts as parameter names in job configuration forms.
Mitigation and Prevention
Discover the necessary steps to address and prevent the risks associated with CVE-2021-21667.
Immediate Steps to Take
Users are advised to update Jenkins Scriptler Plugin to a non-vulnerable version, ideally higher than 3.2, to mitigate the XSS risk.
Long-Term Security Practices
Implementing strict input validation measures and regular security audits can help prevent similar XSS vulnerabilities in the future.
Patching and Updates
Stay informed about security advisories and promptly apply patches released by the Jenkins project to safeguard against known vulnerabilities.