Check Point Advisories

Jenkins Config File Provider Plugin External Entity Injection (CVE-2021-21642)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-1392
Date Published:	20 Nov 2022
Severity:	High
Last Updated:	Sunday 20 November, 2022
Source:
Industry Reference:	CVE-2021-21642
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Jenkins Config File Provider Plugin 3.7.0 and prior
Vulnerability Description	An XXE vulnerability exists in Jenkins Config File Provider Plugin. The vulnerability is due to insufficient validation of XML data when utilizing Config File Provider Plugin.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Jenkins Config File Provider Plugin External Entity Injection (CVE-2021-21642) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: Jenkins Config File Provider Plugin External Entity Injection (CVE-2021-21642)