8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2022-43433

CVE-2022-43433: Content-Security-Policy protection for user content disabled by Jenkins ScreenRecorder Plugin

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 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 configured are unaffected.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2022-43433

CVE-2022-43433:

8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
io.jenkins.plugins:screenrecorder	maven	<= 0.7

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from the plugin's modification of the Java system property controlling Content-Security-Policy headers. Jenkins' DirectoryBrowserSupport relies on this property to set CSP headers for static content. By setting it to 'media-src: self' without maintaining other default directives (like script-src), the plugin effectively nullifies XSS protections. The act of modifying this system property via System.setProperty() is the root cause, as confirmed by the advisory's description of how the CSP header gets overwritten.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

Vulnerability Intelligence
Miggo AI

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WAF Protection Rules

WAF Rule

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Reasoning

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