Security restrictions bypass in Jenkins Job DSL plugin

1) Security restrictions bypass

EUVDB-ID: #VU17918

Risk: Low

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the vulnerable server.

The vulnerability exists due to an error when parsing, compiling or instantiating a Groovy script within the support for sandboxed Groovy expressions for Job DSL definitions. A remote attacker with the ability to control the Job DSL scripts can supply a specially crafted Groovy script, bypass the sandbox protection and execute arbitrary code on the Jenkins master.

Successful exploitation of the vulnerability may allow an attacker to compromise the affected server.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Job DSL: 1.3 - 1.71

External links

http://jenkins.io/security/advisory/2019-03-06/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.