Sendbox restrictions bypass in Jenkins Script Security and Pipeline: Groovy plugins

1) Improper access control

EUVDB-ID: #VU18068

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1003041,CVE-2019-1003040

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 when invoking methods supporting type casts and type coercion. A remote authenticated attacker can invoke constructors for arbitrary types.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Script Security: 1.0 - 1.55

Pipeline: Groovy: 2.0 - 2.64

CPE2.3

• cpe:2.3:a:jenkins:script-security:1.0:*:*:*:*:jenkins:*:*
• cpe:2.3:a:jenkins:script-security:1.1:*:*:*:*:jenkins:*:*
• cpe:2.3:a:jenkins:script-security:1.2:*:*:*:*:jenkins:*:*
• cpe:2.3:a:jenkins:workflow-cps:2.0:*:*:*:*:jenkins:*:*
• cpe:2.3:a:jenkins:workflow-cps:2.1:*:*:*:*:jenkins:*:*
• cpe:2.3:a:jenkins:workflow-cps:2.2:*:*:*:*:jenkins:*:*

External links

https://jenkins.io/security/advisory/2019-03-25/

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.