CVE-2021-21621: Support bundles can include user session IDs in Jenkins Support Core Plugin
3.1
CVSS Score
3.1
Basic Information
CVE ID
GHSA ID
EPSS Score
0.26493%
CWE
Published
5/24/2022
Updated
12/15/2023
KEV Status
No
Technology
Java
Technical Details
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| org.jenkins-ci.plugins:support-core | maven | <= 2.72 | 2.72.1 |
Vulnerability Intelligence
Miggo AI
Root Cause Analysis
The vulnerability stemmed from explicitly writing the raw authentication object's string representation in AboutUser.java. The patch (9af9efae6e9ed408ca89ff9b5f1b7a74da0a131f) removed the line 'out.println(" * Raw: " + Markdown.escapeBacktick(...authentication.toString()) + "")' which directly addressed the exposure. This function was clearly responsible for including sensitive session data in support bundles.