CVE-2017-1000095 (Medium) detected in script-security-1.15.jar

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CVE-2017-1000095 - Medium Severity Vulnerability

Vulnerable Library - script-security-1.15.jar

Allows Jenkins administrators to control what in-process scripts can be run by less-privileged users.

Library home page: https://wiki.jenkins-ci.org/display/JENKINS/Script+Security+Plugin

Path to dependency file: influxdb-plugin/pom.xml

Path to vulnerable library: /root/.m2/repository/org/jenkins-ci/plugins/script-security/1.15/script-security-1.15.jar

Dependency Hierarchy:

• performance-3.0.jar (Root Library)
  • workflow-cps-1.13.jar
    • ❌ script-security-1.15.jar (Vulnerable Library)

Vulnerability Details

The default whitelist included the following unsafe entries: DefaultGroovyMethods.putAt(Object, String, Object); DefaultGroovyMethods.getAt(Object, String). These allowed circumventing many of the access restrictions implemented in the script sandbox by using e.g. currentBuild['rawBuild'] rather than currentBuild.rawBuild. Additionally, the following entries allowed accessing private data that would not be accessible otherwise due to script security: groovy.json.JsonOutput.toJson(Closure); groovy.json.JsonOutput.toJson(Object).

Publish Date: 2017-10-05

URL: CVE-2017-1000095

CVSS 3 Score Details (6.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://www.jenkins.io/security/advisory/2017-07-10/

Release Date: 2017-10-05

Fix Resolution: org.jenkins-ci.plugins:script-security:1.29.1