In the Jenkins project, we ask that people report security issues to our private issue tracker. This allows us to review issues and prepare fixes in private, often resulting in better, safer security fixes. As a side effect of that, we also learn about common misconceptions and usability problems related to security in Jenkins.
This post is intended to address one of those: The goal and limitations of credentials masking. One very common example of that is the role of credentials masking in Jenkins, typically involving a pipeline snippet that looks like this:. Credentials that are in scope are made available to the pipeline without limitation. To prevent accidental exposure in the build log, credentials are masked from regular output, so an invocation of env Linux or set Windowsor programs printing their environment or parameters would not reveal them in the build log to users who would not otherwise have access to the credentials.
The misconception here is that Jenkins will prevent other, perhaps deliberate ways to reveal the password. Some examples:. Both of these snippets circumvent credentials masking in the build log, and show that people with control over the build script can use credentials in ways not necessarily intended or approved by admins.
Obviously these are just the most straightforward examples illustrating the problem. Others could involve the proc file system, sending it to an HTTP server in response to a authentication challenge, embedding it in the otherwise legitimate build result, etc. It would be great if Jenkins could allow the flexible use of credentials with no risk of exposing them through straightforward build script modifications, but realistically, it is impossible for Jenkins to police use of the credential by a build script without the support of a very specific environment setup e.
Actual build scripts invoked by pipelines, either shell scripts as in the example above, or more standard build tools such as Maven controlled by pom. Disclosure of secrets can also happen inadvertently: Jenkins will prevent exact matches of the password or other secret to appear in the log file. The sequence of characters to be printed is no longer identical to the secret, so would not be masked. Credentials can be defined in different scopes: Credentials defined on the root Jenkins store the default will be available to all jobs on the instance.
The only exception are credentials with System scope, intended for the global configuration only, for example, to connect to agents. Credentials defined in a folder are only available within that folder transitively, i. This allows defining sensitive credentials, such as deployment credentials, on specific folders whose contents only users trusted with those credentials are allowed to configure: Directly in Jenkins using Matrix Authorization Plugin and by limiting write access to repositories defining pipelines as code.
Pipelines inside this folder can use the e. Those would need to use the build step or similar approaches to invoke the pipelines inside the folder to deploy their output. While the previous section outlines a solution to the problem of restricting access to credentials, care needs to be taken so that credentials are not captured anyway.
Server Fault is a question and answer site for system and network administrators. It only takes a minute to sign up. I am running a pipeline job and with this we need to pass a parameter to a downsteam job but its not working. We tried as follows:.Jenkins - Parameterized Concepts in Jenkins With Real time Scenarios
QA-Test-Windows is a Freestyle job and in that we tried accessing the parameter in script as follows but its not working. Tried accessing variables but its not working. Can anyone please help me on this. I'm not sure what exactly wrong in your code, looks like there is mistake. Sign up to join this community. The best answers are voted up and rise to the top.
Home Questions Tags Users Unanswered. In Jenkins how to pass a parameter from Pipeline job to a freestyle job Ask Question. Asked 1 year, 11 months ago.
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As I did mention originally, Jenkins does recommend that the build script is placed into source control, so I started looking at doing that. I wanted to have a single version that was capable of handling different configurations that some projects have and that would receive any required parameters directly from the Jenkins job. Fortunately this is both possible and easy to do as you can add custom properties to a Jenkins job which the Groovy scripts can then access.
This article will detail how I took my original script, and adapted it to handle 19 and counting! Parameters are switched off and hidden by default, but it's easy enough to enable them. In the General properties for your job, find and tick the option marked This project is parameterised.
This will then show a button marked Add Parameter which, when clicked, will show a drop-down of the different parameter types available. For my script, I'm going to use single line string, multi-line string and boolean parameters. The parameter name is used as environment variables in batch jobs, therefore you should try and avoid common parameter names such as PATH and also ensure that the name doesn't include special characters such as spaces.
By the time I'd added 19 pipeline projects including converting the four I'd created earlier into parameterised builds running from the same source script, I'd ended up with the following parameters.
More parameters than I really wanted, but it covers the different scenarios I need. Note that with the exception of LIBNAMEall other parameters are optional and the build should still run even if they aren't actually defined. Of the three types above, the first two return null if you request a parameter which doesn't exist - very helpful for when you decide to add a new parameter later and don't want to update all the existing projects! The third however, will crash the build.
It'll be easy to diagnose if this happens as the output log for the build will contain lines similar to the following.
So my advice is to only use the interpolation versions when you can guarantee the parameters will exist. In my first attempt at creating the pipeline job, I had a block of variables defined at the top of the script so I could easily edit them when creating the next pipeline.
I'm now going to adapt that block to use parameters.
Unable to use masked passwords when passing in extra-vars
I'm using params to access the parameters to avoid any interpolation crashes. As it's possible the path parameters could be missing or empty, I'm also using a combinePath helper function. This is a very naive implementation and should probably be made a little more robust.
Although Java has a File object which we could use, it is blocked by default as Jenkins runs scripts in a sandbox.Some time ago I published a post in which I explain how you can create credentials in Jenkins. I think this topic should have a separate discussion, so I decided to make this post.
One can add and manage credentials by the Credential Plugin. It is possible to pass on the password in the project as the parameter, but it is not recommended. But how can you pass on your credentials to the job? The simplest way is using the Credentials Binding Plugin.
It allows you to binds your credentials to environmental variables, so then you can easily attach them to your builds. First, you need to install the plugin — you can do it with the Plugin Manager. More details about this addon are available on the plugin Wiki page. It can be added one or more bindings of the following types:.
Every of these types has its own, short help available after the question mark pressing. You can add one or more credentials, also with the mixed type:. Of course, you can choose only these credentials, which you have previously created. Since you have some credentials and you want to bind them, you can simply name the individual variables. In the example above, I chose two types of secrets: secret file and username and password separated.
As you can see, I had to fill in some fields, which correspond to the right parts of the credentials. So, for now, you have some credentials stored in the Jenkins, and you have created some bindings. Now I will show you how you can pass on your work to the project. Look at this code:. This is not always the right way.I have configured global parameters for masking passwords. Plugin: Mask Passwords Plugin 2.
I have created job and enable mask password 3. I have created build pipeline view. Plugin: Build Pipeline Plugin with the first job with masked passwords. The result was, that the input parameters contains masked password in plaintext in the pipeline view.
The same is true for passwords masked by the envinject plugin. They are all displayed, if "Show pipeline parameters" is set to true. I've rebuild the plugin from the source code and Thomas commit have fixed the problem for Job Password Parameters. The only issue I can observe is that Thomas' fix remove the parameter instead of masking it. I tried to simulate the issue with EnvInject plugin I personally don't use it and the injected variables don't appear in the pipeline view. The issue seems to be fixed.
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XML Word Printable. Type: Bug. Status: Resolved View Workflow. Priority: Critical. Resolution: Fixed. Labels: plugins. Similar Issues:. Issue Links. Hide Permalink. Riccardo Gorza added a comment - This article details a useful way to embed parameters in your Jenkins build job URLs, credentials, etc. Build parameters can be used to store configuration options or data that should not live in source code e. Mobile Cloud credentials. This example will explain how to use build parameters in Jenkins when building a Maven enabled Java project.
For example, to accept a property called "PerfectoUsername" use the following code:. Parameters can be added in the Main tab. In order to create the parameters, open a Jenkins build job and check the "This build is parameterized" checkbox. Then, click the Add Parameter button, and select the parameter type to add.
Note, that when storing a password, choose "Password Parameter". The value will then be masked. The actual values can be provided in the configuration, or runtime values can be provided when creating the build. Page tree.
Browse pages. A t tachments 4 Page History. Jira links. Last updated: Sep 14, This article details a useful way to embed parameters in your Jenkins build job URLs, credentials, etc. Overview Build parameters can be used to store configuration options or data that should not live in source code e. Jenkins Configuration In order to create the parameters, open a Jenkins build job and check the "This build is parameterized" checkbox.
The Mask Passwords plugin only allows for preset passwords to be passed in to the build process, so it really does nothing for the security of the Job. I need a password parameter that needs to be entered every time the job is run as a parameter and I need that to be masked in the console output. Tested with Jenkins 1. You need to activate it in the "Configure System" and also in the job you want to use this. In the job configuration is a point "Mask passwords" which must be activated and then will use the global config to mask passwords.
You can use credentials. Add secret text credentials and give and id that you'll use like the following:. I am using here "Inject passwords to the build as environment variables" form "Build Environment". It's really works great. Even more it also hide user input passwords through "password parameter". Brief Description about my jenkins job: I wrote a job which downloads the artifacts from Nexus based on the parameters given at run-time and then makes a Database SQL connection and deploy the SQL scripts using maven flyway plugin.
My job takes - Environment, Database Schema, Artifact version number, Flyway command, Database User and it's password as input parameters. Although I was using "Password Parameter" to pass the password at run-time but then also it was coming as plain text in console. I tried to use the "secret text" to encrypt the password but then my job started failing because the encrypted password was getting passed to Maven Goals, which was not able to connect to DB.
And this is working as expected. Learn more. How to hide passwords in Jenkins console output?
Masked Passwords are shown as input parameters in Build pipeline plugin
Ask Question. Asked 4 years, 7 months ago. Active 1 year, 7 months ago. Viewed 34k times. Ian Tait Ian Tait 1 1 gold badge 6 6 silver badges 11 11 bronze badges. Active Oldest Votes. Thanks, this is what I was looking for! But this doesn't hide Cloudfoundry apps password on Jenkins console. Bruck Wubete Bruck Wubete 91 2 2 silver badges 3 3 bronze badges. Even more it also hide user input passwords through "password parameter" Really cool!!