Vulnerability CVE-2021-21646
Published: 2021-04-21

Description:
Jenkins Templating Engine Plugin 2.1 and earlier does not protect its pipeline configurations using Script Security Plugin, allowing attackers with Job/Configure permission to execute arbitrary code in the context of the Jenkins controller JVM.

Type:

CWE-693

 (Protection Mechanism Failure)

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Jenkins -> Templating engine 

 References:
https://www.jenkins.io/security/advisory/2021-04-21/#SECURITY-2311
http://www.openwall.com/lists/oss-security/2021/04/21/2
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