Sandbox restrictions bypass in Script Security plugin for Jenkins



Published: 2019-02-20 | Updated: 2019-10-07
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-1003024
CWE-ID CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Script Security
Web applications / Modules and components for CMS

Vendor Jenkins

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper access control

EUVDB-ID: #VU21569

Risk: High

CVSSv3.1:

CVE-ID: CVE-2019-1003024

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass sandbox restrictions.

The vulnerability exists due to improper access restrictions in "RejectASTTransformsCustomizer.java". A remote authenticated attacker with Overall/Read permission, or the ability to control Jenkins file or sandboxed Pipeline shared library contents in SCM, can provide a Groovy script to an HTTP endpoint that can result in arbitrary code execution on the Jenkins master JVM.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

Script Security: 1.0 - 1.52


CPE2.3 External links

http://jenkins.io/security/advisory/2019-02-19/#SECURITY-1320

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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