Vulnerability identifier: #VU52497

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21647

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CloudBees CD
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the affected plugin does not perform a permission check in an HTTP endpoint. A remote authenticated attacker can schedule builds of projects without having Item/Build permission.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CloudBees CD: 1.0 - 1.1.21

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External links
http://www.jenkins.io/security/advisory/2021-04-21/#SECURITY-2309
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.