Remote Code Execution Vulnerability in Jenkins Templating Engine Plugin by CloudBees
CVE-2021-21646

8.8HIGH

Key Information:

Vendor

Jenkins
Status
Jenkins Templating Engine Plugin
Vendor
CVE Published:
21 April 2021
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What is CVE-2021-21646?

The Jenkins Templating Engine Plugin, versions 2.1 and earlier, lacks essential protections for pipeline configurations due to inadequate integration with the Script Security Plugin. This oversight allows users with Job/Configure permissions to potentially execute arbitrary code within the Jenkins controller JVM, exposing the system to significant security risks.

Affected Version(s)

Jenkins Templating Engine Plugin <= 2.1

References

https://www.jenkins.io/security/advisory/2021-04-21/#SECU...
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http://www.openwall.com/lists/oss-security/2021/04/21/2
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CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-21646 : Remote Code Execution Vulnerability in Jenkins Templating Engine Plugin by CloudBees