This advisory announces vulnerabilities in the following Jenkins deliverables:
Parameterized Trigger Plugin 2.43 and earlier captures environment variables passed to builds triggered using Parameterized Trigger Plugin, including password parameter values, in their build.xml files.
These values are stored unencrypted and can be viewed by users with access to the Jenkins controller file system.
Parameterized Trigger Plugin 2.43.1 does not store captured environment variables in build.xml files.
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Note
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Existing build.xml files are not automatically updated to remove captured environment variables.
They need to be manually cleaned up.
To help with this, the plugin will report environment variables stored in build.xml as unloadable data in the Old Data Monitor, that allows discarding this data.
Build records are only loaded from disk when needed however, so some builds stored in Jenkins may not immediately appear there.
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Favorite Plugin 2.4.0 and earlier does not escape the names of jobs in the favorite column.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure or Item/Create permissions.
Favorite Plugin 2.4.1 escapes the names of jobs in the favorite column.
Dashboard View Plugin 2.18 and earlier does not perform URL validation for the Iframe Portlet’s Iframe source URL.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to configure views.
Dashboard View Plugin 2.18.1 performs URL validation for the Iframe Portlet’s Iframe source URL.
Additionally, Dashboard View Plugin 2.18.1 sets the sandbox attribute for the iframe to restrict the included page.
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Note
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In case of problems, the Java system property hudson.plugins.view.dashboard.core.IframePortlet.sandboxAttributeValue can be used to customize the sandbox attribute value.
The Java system property hudson.plugins.view.dashboard.core.IframePortlet.doNotUseSandbox can be used to disable the sandbox completely.
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CloudBees AWS Credentials Plugin 189.v3551d5642995 and earlier does not perform a permission check in a method implementing form validation.
This allows attackers with Overall/Read permission to connect to an AWS service using an attacker-specified token.
Additionally, this form validation method does not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.
This form validation method requires POST requests and Overall/Administer permission in CloudBees AWS Credentials Plugin 191.vcb_f183ce58b_9.
Folder-based Authorization Strategy Plugin 1.3 and earlier does not escape the names of roles shown on the configuration form.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Overall/Administer permission.
Folder-based Authorization Strategy Plugin 1.4 escapes the names of roles shown on the configuration form.
Semantic Versioning Plugin defines a controller/agent message that processes a given file as XML and returns version information. The XML parser is not configured to prevent XML external entity (XXE) attacks, which is only a problem if XML documents are parsed on the Jenkins controller.
Semantic Versioning Plugin 1.13 and earlier does not restrict execution of the controller/agent message to agents, and implements no limitations about the file path that can be parsed. This allows attackers able to control agent processes to have Jenkins parse a crafted file that uses external entities for extraction of secrets from the Jenkins controller or server-side request forgery.
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Note
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This vulnerability is only exploitable in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier. See the LTS upgrade guide. |
Semantic Versioning Plugin 1.14 does not allow the affected controller/agent message to be submitted by agents for execution on the controller.
Extended Choice Parameter Plugin 346.vd87693c5a_86c and earlier does not escape the value and description of Extended Choice Parameters with parameter type 'Radio Buttons' or 'Check Boxes'.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
As of publication of this advisory, there is no fix.
Extended Choice Parameter Plugin 346.vd87693c5a_86c and earlier allows attackers with Item/Configure permission to read values from arbitrary JSON and Java properties files on the Jenkins controller.
As of publication of this advisory, there is no fix.
Extended Choice Parameter Plugin 346.vd87693c5a_86c and earlier does not perform a permission check on form validation methods. This allows attackers with Overall/Read permission to connect to an attacker-specified URL.
Additionally, these form validation methods do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.
As of publication of this advisory, there is no fix.
GitLab Authentication Plugin 1.13 and earlier stores the GitLab client secret unencrypted in the global config.xml file on the Jenkins controller as part of its configuration.
This client secret can be viewed by users with access to the Jenkins controller file system.
As of publication of this advisory, there is no fix.
global-build-stats Plugin 1.5 and earlier does not escape multiple fields in the chart configuration on the 'Global Build Stats' page.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Overall/Administer permission.
As of publication of this advisory, there is no fix.
Kubernetes Continuous Deploy Plugin contributes the 'Kubernetes configuration (kubeconfig)' credential type.
Kubernetes Continuous Deploy Plugin 2.3.1 and earlier allows users with Credentials/Create or Credentials/Update permission to read arbitrary files on the Jenkins controller by defining a 'From a file on the Jenkins master' Kubeconfig source for such a credential.
As of publication of this advisory, there is no fix.
Kubernetes Continuous Deploy Plugin 2.3.1 and earlier does not perform permission checks in several HTTP endpoints.
This allows attackers with Overall/Read permission to enumerate credentials IDs of credentials stored in Jenkins. Those can be used as part of an attack to capture the credentials using another vulnerability.
As of publication of this advisory, there is no fix.
Kubernetes Continuous Deploy Plugin 2.3.1 and earlier does not perform a permission check in an HTTP endpoint.
This allows attackers with Overall/Read permission to connect to an attacker-specified SSH server using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.
Additionally, this endpoint does not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.
As of publication of this advisory, there is no fix.
List Git Branches Parameter Plugin 0.0.9 and earlier does not escape the name or default value of the 'List Git branches (and more)' parameter. Additionally, List Git Branches Parameter Plugin explicitly disables a protection mechanism introduced in Jenkins 2.44 and LTS 2.32.2 to prevent exploitation of unescaped parameter names.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
As of publication of this advisory, there is no fix.
Environment Dashboard Plugin 1.1.10 and earlier does not escape the Environment order and the Component order configuration values in its views.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with View/Configure permission.
As of publication of this advisory, there is no fix.
Release Helper Plugin 1.3.3 and earlier does not perform a permission check in a method implementing form validation.
This allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified username and password.
Additionally, this form validation method does not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability.
As of publication of this advisory, there is no fix.
dbCharts Plugin 0.5.2 and earlier stores JDBC connection passwords unencrypted in its global configuration file hudson.plugins.dbcharts.DbChartPublisher.xml on the Jenkins controller as part of its configuration.
These passwords can be viewed by users with access to the Jenkins controller file system.
As of publication of this advisory, there is no fix.
Vmware vRealize CodeStream Plugin 1.2 and earlier stores passwords unencrypted in job config.xml files on the Jenkins controller as part of its configuration.
These passwords can be viewed by users with Item/Extended Read permission or access to the Jenkins controller file system.
As of publication of this advisory, there is no fix.
incapptic connect uploader Plugin 1.15 and earlier stores personal tokens unencrypted in job config.xml files on the Jenkins controller as part of its configuration.
These tokens can be viewed by users with Item/Extended Read permission or access to the Jenkins controller file system.
As of publication of this advisory, there is no fix.
These versions include fixes to the vulnerabilities described above. All prior versions are considered to be affected by these vulnerabilities unless otherwise indicated.
As of publication of this advisory, no fixes are available for the following plugins:
The Jenkins project would like to thank the reporters for discovering and reporting these vulnerabilities: