CVE-2020-2188: 
Java vulnerability analysis and mitigation

CVE-2020-2188 is a security vulnerability discovered in Jenkins Amazon EC2 Plugin versions 1.50.1 and earlier, disclosed on May 6, 2020. The vulnerability stems from a missing permission check in form-related methods that allowed users with Overall/Read access to enumerate credentials IDs stored in Jenkins (Jenkins Advisory, OSS Security).

The vulnerability is classified with a CVSS v3.1 Base Score of 4.3 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. The issue relates to incorrect authorization (CWE-863) where the plugin's functionality for listing applicable credentials IDs did not properly validate user permissions (NVD).

The vulnerability allows any user with Overall/Read permission to obtain a list of valid credentials IDs stored in Jenkins. These credential IDs could potentially be used as part of a broader attack to capture the actual credentials if combined with another vulnerability (Jenkins Advisory).

The vulnerability requires an attacker to have Overall/Read access to the Jenkins instance. While the attack complexity is low, it requires valid user credentials with basic read permissions to exploit (NVD).

The vulnerability was fixed in Amazon EC2 Plugin version 1.50.2. The updated version now requires Overall/Administer permission to enumerate credentials IDs. Organizations should upgrade to this version or later to address the vulnerability (Jenkins Advisory).