Jenkins: >> Script Security Security Vulnerabilities
A sandbox bypass vulnerability exists in Script Security Plugin 1.47 and earlier in groovy-sandbox/src/main/java/org/kohsuke/groovy/sandbox/SandboxTransformer.java that allows attackers with Job/Configure permission to execute arbitrary code on the Jenkins master JVM, if plugins using the Groovy sandbox are installed.
CVSS Score
8.8
EPSS Score
0.016
Published
2018-12-10
In Jenkins Script Security Plugin version 1.36 and earlier, users with the ability to configure sandboxed Groovy scripts are able to use a type coercion feature in Groovy to create new `File` objects from strings. This allowed reading arbitrary files on the Jenkins master file system. Such a type coercion is now subject to sandbox protection and considered to be a call to the `new File(String)` constructor for the purpose of in-process script approval.
CVSS Score
6.5
EPSS Score
0.01
Published
2018-01-25
Script Security Plugin did not apply sandboxing restrictions to constructor invocations via positional arguments list, super constructor invocations, method references, and type coercion expressions. This could be used to invoke arbitrary constructors and methods, bypassing sandbox protection.
CVSS Score
8.8
EPSS Score
0.012
Published
2017-10-05
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).
CVSS Score
6.5
EPSS Score
0.008
Published
2017-10-05
The Script Security plugin before 1.18.1 in Jenkins might allow remote attackers to bypass a Groovy sandbox protection mechanism via a plugin that performs (1) direct field access or (2) get/set array operations.
CVSS Score
7.3
EPSS Score
0.018
Published
2017-02-09
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