XXE vulnerability in Jenkins WebSphere Deployer Plugin
Date: 2022-05
Affected: maven/org.jenkins-ci.plugins:websphere-deployer
Attack vector: other
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2020-2108
CWE: CWE-611
CVSS: 7.6 (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L)

WebSphere Deployer Plugin 1.6.1 and earlier does not configure the XML parser to prevent XML external entity (XXE) attacks. This could be exploited by a user with Job/Configure permissions to upload a specially crafted war file containing a `WEB-INF/ibm-web-ext.xml` which is parsed by the plugin.


Mitigations:

Architectural layers (MAESTRO):