SB2019030701 - Security restrictions bypass in Jenkins Script Security plugin

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Main Vulnerability Database SB2019030701

SB2019030701 - Security restrictions bypass in Jenkins Script Security plugin

Published: March 7, 2019 Updated: October 7, 2019

Security Bulletin ID SB2019030701
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Security restrictions bypass (CVE-ID: CVE-2019-1003029)

The vulnerability allows a remote attacker to execute arbitrary code on the vulnerable server.

The vulnerability exists due to an error  in "src/main/java/org/jenkinsci/plugins/scriptsecurity/sandbox/groovy/GroovySandbox.java" and "src/main/java/org/jenkinsci/plugins/scriptsecurity/sandbox/groovy/SecureGroovyScript.java" when parsing, compiling or instantiating a Groovy script. A remote attacker with Overall/Read permission can supply a specially crafted Groovy script, bypass the sandbox protection and execute arbitrary code on the Jenkins master.

The vulnerability can be exploited via an HTTP endpoint that provides script validation or via another plugin on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise the affected server.


Remediation

Install update from vendor's website.

References