#VU21120 Permissions, Privileges, and Access Controls in Script Security - CVE-2019-10394

Vulnerability identifier: #VU21120

Vulnerability risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10394

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Script Security
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper handling of property names in property expressions on the left-hand side of assignment expressions. A remote authenticated attacker can specify and run sandboxed scripts to execute arbitrary code the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Script Security: 1.0 - 1.62

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External links
https://www.openwall.com/lists/oss-security/2019/09/12/2
https://jenkins.io/security/advisory/2019-09-12/#SECURITY-1538

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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.