Information disclosure in Jenkins Kubernetes CLI plugin



Published: 2021-06-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-21661
CWE ID CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Kubernetes CLI
Web applications / Modules and components for CMS

Vendor Jenkins

Security Advisory

This security advisory describes one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

Risk: Low

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

CVE-ID: CVE-2021-21661

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information on the system.

The vulnerability exists due to the affected plugin does not perform permission checks in several HTTP endpoints. A remote authenticated attacker can enumerate credentials IDs of credentials stored in Jenkins.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Kubernetes CLI: 0.1.0, 1.0.0, 1.1.0, 1.2.0, 1.3.0, 1.4.0, 1.5.0, 1.6.0, 1.7.0, 1.8.0, 1.8.1, 1.8.2, 1.8.3, 1.9.0, 1.10.0

CPE External links

https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-2370
http://www.openwall.com/lists/oss-security/2021/06/10/14

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.



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