Vulnerability identifier: #VU52496

Vulnerability risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21646

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Templating Engine
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 the affected plugin does not protect its pipeline configurations using Script Security Plugin. A remote authenticated attacker can execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Templating Engine: 1.0.0 - 2.1

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External links
http://www.jenkins.io/security/advisory/2021-04-21/#SECURITY-2311
http://www.openwall.com/lists/oss-security/2021/04/21/2

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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.