#VU54058 Improper access control in XebiaLabs XL Deploy - CVE-2021-21663

Vulnerability identifier: #VU54058

Vulnerability risk: Medium

CVSSv4.0: 5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-21663

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
XebiaLabs XL Deploy
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the affected plugin does not perform a permission check in a method implementing form validation. A remote authenticated attacker can connect to an attacker-specified URL and capture Username/password credentials stored in Jenkins.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

XebiaLabs XL Deploy: 3.9.6 - 10.0.1

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External links
https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-1982
https://www.openwall.com/lists/oss-security/2021/06/10/14

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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.