CVE-2023-50766

Description

Jenkins Nexus Platform Plugin 3.18.0-03 and earlier does not perform permission checks in methods implementing form validation. This allows attackers with Overall/Read permission to send an HTTP request to an attacker-specified URL and parse the response as XML. Additionally, the plugin does not configure its XML parser to prevent XML external entity (XXE) attacks, so attackers can have Jenkins parse a crafted XML response that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery. Additionally, these form validation methods do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability. Nexus Platform Plugin 3.18.1-01 configures its XML parser to prevent XML external entity (XXE) attacks. Additionally, POST requests and Overall/Administer permission are required for the affected HTTP endpoints.

How to fix CVE-2023-50766

To remediate CVE-2023-50766, upgrade the affected package to a fixed version below.

• —upgrade to 3.18.1-01 or later

Is CVE-2023-50766 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 3.18.1-01

CVSS scores

References (6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-50766
• PATCHgithub.com/jenkinsci/nexus-platform-plugin
• WEBgithub.com/jenkinsci/nexus-platform-plugin/commit/1d5e1e9e457af5e8ce8c9a403933d6cb73542dbd
• WEBgithub.com/jenkinsci/nexus-platform-plugin/pull/291