CVE-2022-43433

Description

Jenkins sets the `Content-Security-Policy` header to static files served by Jenkins (specifically `DirectoryBrowserSupport`), such as workspaces, `/userContent`, or archived artifacts, unless a Resource Root URL is specified. ScreenRecorder Plugin 0.7 and earlier programmatically updates [the Java system property](https://www.jenkins.io/doc/book/managing/system-properties/#hudson-model-directorybrowsersupport-csp) allowing administrators to customize the `Content-Security-Policy` header for static files served by Jenkins to include `media-src: 'self'`. On a Jenkins instance with default configuration, this effectively disables all other directives in the default rule set, including `script-src`. This allows cross-site scripting (XSS) attacks by users with the ability to control files in workspaces, archived artifacts, etc. Jenkins instances with [Resource Root URL](https://www.jenkins.io/doc/book/security/user-content/#resource-root-url) configured are unaffected.

How to fix CVE-2022-43433

No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.

• —no fix listed

Is CVE-2022-43433 being exploited?

Low — EPSS is 1.1%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, <= 0.7

CVSS scores

References (4)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2022-43433
• PATCHgithub.com/jenkinsci/screenrecorder-plugin
• WEBwww.jenkins.io/security/advisory/2022-10-19/#SECURITY-2864
• WEBwww.openwall.com/lists/oss-security/2022/10/19/3