Remote code execution in Jenkins Script Security Plugin



Published: 2019-11-22
Severity High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-16538
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 Advisory

This security advisory describes one high risk vulnerability.

1) Improper access control

Severity: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-16538

CWE-ID: CWE-284 - Improper Access Control

Description

The vulnerability allows a remote attacker to bypass sandbox restrictions.

The vulnerability exists due to improper access restrictions. A remote authenticated attacker can circumvent the Sandbox protection through closure default parameter expressions and execute arbitrary code on the Jenkins master JVM.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Script Security: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.18.1, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.27, 1.28, 1.29, 1.29.1, 1.30, 1.31, 1.32, 1.33, 1.34, 1.35, 1.36, 1.37, 1.38, 1.39, 1.40, 1.41, 1.42, 1.43, 1.44, 1.44.1, 1.45, 1.46, 1.46.1, 1.47, 1.48, 1.49, 1.50, 1.51, 1.52, 1.53, 1.54, 1.54.1, 1.54.2, 1.54.3, 1.54.4, 1.55, 1.56, 1.57, 1.57.1, 1.57.2, 1.57.3, 1.57.4, 1.58, 1.59, 1.60, 1.60.1, 1.61, 1.62, 1.63, 1.63.1, 1.64, 1.65, 1.66, 1.66.1, 1.67

CPE External links

https://jenkins.io/security/advisory/2019-11-21/#SECURITY-1658

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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



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