Vulnerability identifier: #VU17916

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Email Extension
Web applications / Modules and components for CMS

Vendor: Jenkins

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 supported functionality for sandboxed Groovy expressions. A remote attacker with the ability to control the plugin’s job-specific configuration 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

Email Extension: 1.0 - 2.64

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

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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.