CVE-2020-2271: 
Java vulnerability analysis and mitigation

CVE-2020-2271 is a stored cross-site scripting (XSS) vulnerability affecting the Jenkins Locked Files Report Plugin versions 1.6 and earlier. The vulnerability was discovered and disclosed on September 16, 2020, as part of a larger Jenkins security advisory. The affected component is the Locked Files Report Plugin, which fails to properly escape locked files' names in tooltips (Jenkins Advisory).

The vulnerability is classified as a stored XSS vulnerability with a severity rating of High. The core issue stems from the plugin's failure to properly escape locked files' names when displaying them in tooltips, which allows for potential injection of malicious scripts. The vulnerability is tracked as SECURITY-1921 and requires Job/Configure permission to be exploited (Jenkins Advisory).

When exploited, this vulnerability allows attackers with Job/Configure permission to execute arbitrary JavaScript code in the context of other users' browsers who view the affected tooltips. This could potentially lead to session hijacking, credential theft, or other client-side attacks (Jenkins Advisory).

The vulnerability is exploitable by attackers who have Job/Configure permission in the Jenkins environment. The attack vector requires the ability to manipulate locked files' names that are displayed in tooltips (Jenkins Advisory).

As of the advisory's publication date, no official fix was available for this vulnerability. Users of the Locked Files Report Plugin should consider restricting Job/Configure permissions to trusted users and monitoring for any suspicious activity (Jenkins Advisory).