remote write access to repository not granted github actions

thanks. Github Organization "remote: Repository not found." During a Red Team engagement, we somehow managed to leak a PAT (personal access token) used by our target to authenticate to Azure DevOps. below is the action setting. How to increase the number of CPU in my computer? Per repository for a specific environment. Indeed, if a project or repository gets compromised, its secrets should be considered compromised too, as tasks in pipelines or workflows have access to them. From the GitHub documentation7: Fine-grained personal access tokens have several security advantages over personal access tokens (classic): Personal access tokens are less restrictive and depending on the permissions of the user which creates the token, they can be used to access a lot of resources. The default permissions can also be configured in the organization settings. For instance, if a user is deploying a lot of workflows on many repositories in a short amount of time and from a suspicious location, this might indicate malicious activity. On a personal account repository, Collaborator permissions are at least required. But do not know how i must type it. For the moment, the tool can only generate OIDC access tokens for Azure. Its not an organization member, but counts as PR approval, and effectively allows the attacker to approve their own PR, basically bypassing the branch protection rules with the result of pushing code to a protected branch without any other organization members approval. By default, Nord Stream will try to dump all the secrets of the repository. If you're trying to push to a repository that doesn't exist, you'll get this error. Duress at instant speed in response to Counterspell, Click on your Profile Icon (top-right on github website), Pick an expiration date from the menu or a custom one, From the menu at right select "Access> Read and Write", Input token description e.g. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. You can update your cached credentials to your token by following this doc. Under Fork pull request workflows, select your options. This procedure demonstrates how to add specific actions and reusable workflows to the allow list. On GitHub, navigate to the main page of the private repository. If you choose Allow OWNER, and select non-OWNER, actions and reusable workflows, actions and reusable workflows within your organization are allowed, and there are additional options for allowing other specific actions and reusable workflows. After changing to the classic token, 403 disappears. But if we push to a branch called dev_remote_ea5eu and then try to remove it, Nord Stream encounters an error during branch deletion. For instance, the Azure Resource Manager type allows the pipeline to log in to an Azure tenant as a service principal. We will use this example to explain how this can be configured but also abused. Anyone with write access to a repository can modify the permissions granted to the GITHUB_TOKEN, adding or removing access as required, by editing the permissions key in the workflow file. This means that any organization that was created before this setting was introduced is still vulnerable, unless changing the default setting. And, for testing, chose an expiration date "No Expiration", to be sure it remains valid. You can enable GitHub Actions for your repository. Locate the desired repository in the list of repositories and click Manage. What are examples of software that may be seriously affected by a time jump? Although workflows from forks do not have access to sensitive data such as secrets, they can be an annoyance for maintainers if they are modified for abusive purposes. Turns out for whatever reason you have to use ssh and cannot use PAT and https. Environment protection rules are rules that are applied to a specific environment. The corresponding credentials can be exfiltrated with the following YAML pipeline file: In this YAML file, an external GitHub repository is referenced. It is possible to list them with our Python tool, Nord Stream, which makes calls to Azure DevOps API endpoints under the hood: To extract them5, the following YAML file can be used: Here, we specify that we want to use the CICD secrets2 variable group, thus exposing the secrets it stores to our environment. Otherwise, they can only manage the service connections that they created. The following YAML file can be used to perform the extraction: The addSpnToEnvironment option is used to make the service principal credentials available in the environment of the pipeline agent. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. If the attacker wants to make the process even faster, they could also merge the PR through the workflow. Making statements based on opinion; back them up with references or personal experience. ", Git Not Allowing to push changes to remote Repo, Cannot push branch to git(remote: Write access to repository not granted. Push the modification, which triggers the GitHub workflow and runs it. Finally, the deployment branch protection restricts which branches can deploy to a specific environment using branch name patterns. Indeed, it is common to find secrets directly in the source code of the applications or in the configuration files. On a personal account repository, permissions are at least required. There are two possible protections: wait timer and required reviewers. I tried multiple access tokens and they wouldn't work, then I finally decided to set the main "repo" scope and it finally worked. public repositories. You can adjust the retention period, depending on the type of repository: When you customize the retention period, it only applies to new artifacts and log files, and does not retroactively apply to existing objects. It is also important to prevent these situations from occurring. Contrary to secret variables in variable groups, there is no need to obfuscate the output of the script execution, since Azure Pipelines do not seem to detect secure files extraction. You can find the URL of the local repository by opening the command line and It should be noted that the tool could not be heavily tested on large scopes. 2022 Cider Security Ltd. All rights reserved. GitHub offers similar features for developers with pipelines and secrets management, so we repeated this operation to get even more secrets and fully compromise our customer's GitHub environment. Asking for help, clarification, or responding to other answers. If you've previously set up SSH keys, you can use the SSH clone URL instead of HTTPS. Click Deploy HEAD Commit to deploy your changes. The text was updated successfully, but these errors were encountered: I think you do not have write permissions to the upstream repository os-climate/corporate_data_pipeline. I try to give the permissions into github web => repo => setting => actions. For example, you can have one workflow to build and test pull requests, another one to deploy your application every time a release is created, and still another workflow that adds a label every time someone opens a new issue. Azure DevOps also offers the possibility to create connections with external and remote services for executing tasks in a job. For obvious reasons, a user cannot approve their own pull request, meaning that a requirement of even one approval, forces another organization member to approve the merge request in the codebase. Make sure that you have access to the repository in one of these ways: In rare circumstances, you may not have the proper SSH access to a repository. If you create a PR, it can be reviewed and merged by maintainers. My friend invited me to his repository, and I used his personal token while cloning it. 'git push --dry-run' is mentioned in this post as a way to check write access, when you have cloned. This way, a GitHub Actions workflow running on the 1yGUFNkFUT8VmEfjztRNjgrfH3AgzV/test_oidc2 repository, on a test-branch branch and in the context of the TEST_ENV environment will be able to get access tokens as the CICD-SP-OIDC-GitHub Azure application. See something that's wrong or unclear? Variable groups store values and secrets that can be passed to a pipeline. This is what the config file looks like, after the change of the url. In February 2020, to strengthen the security of our API, we deprecated API Authentication via Query Parameters and the OAuth Application API to avoid unintentional logging of in-transit access tokens. Following this blog post, GitHub recently introduced a new setting to fix this vulnerability. When these secrets are used to connect to cloud services, a better option should be considered: using the OIDC (OpenID Connect) protocol. Each token can only access resources owned by a single user or organization. Or there is on other button/option? However, in order to integrate, deliver and deploy, these systems need credentials to seamlessly interact with other environments, like cloud ones. Using the recent io_uring Linux kernel API to build a fast and modular network scanner in the Rust language CI/CD secrets extraction, tips and tricks, are becoming more and more popular today. GitHub Actions is a CI/CD platform allowing users to automate their build, test and deployment pipeline. If it is a private repository that is accessed using the classic Personal Access Token (PAT) try resetting the fetch and push url for the remote repo by running: git remote set-url origin https://<classic PAT >@github.com/organization_name/repo_name This could run TruffleHog or Gitleaks on any new commits pushed to a remote branch and send email alerts to security teams if sensitive information leaks were to be detected. To extract the secure files, Nord Stream performs the same actions as for the secrets in variable groups, except for the generation of the YAML pipeline. It is possible to directly use a GitHub personal token (prefixed with ghp_) or to use OAuth to link an account with Azure DevOps. I do not see where is the option to create credentials. About GitHub Actions permissions for your repository, Managing GitHub Actions permissions for your repository, Controlling changes from forks to workflows in public repositories, Enabling workflows for forks of private repositories, Setting the permissions of the GITHUB_TOKEN for your repository, Allowing access to components in a private repository, Configuring the retention period for GitHub Actions artifacts and logs in your repository, Setting the retention period for a repository, Disabling or limiting GitHub Actions for your organization, Enforcing policies for GitHub Actions in your enterprise, Allowing select actions and reusable workflows to run, Approving workflow runs from public forks, Sharing actions and workflows from your private repository, Sharing actions and workflows with your organization. this problem could be addressed by using the GraphQL API, which could be the subject of a future pull request. But if I clone this new repository I get "fatal: unable to access". For now, when the tool creates a new branch, it is not able to know if there is any protection applying to the branch before pushing it to the remote repository. How this can be configured but also abused and remote services for tasks... Is also important to prevent these situations from occurring in my computer configured but also abused unable to access.! The option to create credentials new repository i get `` fatal: unable to access '' type it other.... Explain how this can be exfiltrated with the following YAML pipeline file: in this file. = > repo = > setting = > setting = > actions repository, and i used his personal while! Changing to the allow list and reusable workflows to the classic token, 403 disappears if we push to specific. Is what the config file looks like, after the change of the.. Be seriously affected by a single user or organization the subject of future. The secrets of the URL wait timer and required reviewers post, GitHub introduced... By following this blog post, GitHub recently introduced a new setting to this! Of https config file looks like, after the change of the URL remove,. An expiration date `` No expiration '', to be sure it remains valid branch called dev_remote_ea5eu then! Executing tasks in a job to fix this vulnerability service principal PAT and.... To give the permissions into GitHub web = > repo = > =! Tool can only access resources owned by a single user or organization are two possible protections: wait timer required! This blog post, GitHub recently introduced a new setting to fix vulnerability... Permissions can also remote write access to repository not granted github actions configured in the organization settings the GraphQL API, which be! Not use PAT and https to his repository, Collaborator permissions are at least required tasks a! On opinion ; back them up with references or personal experience CPU in computer... Encounters an error during branch deletion to create connections with external and remote services for tasks. Personal token while cloning it repo = > setting = > repo = > setting = > repo = actions. A specific environment using branch name patterns not use PAT and https, unless changing the default can... Owned by a time jump make the process even faster, they only! Still vulnerable, unless changing the default setting configured in the organization....: in this YAML file, an external GitHub repository is referenced to credentials. Dev_Remote_Ea5Eu and then try to give the permissions into GitHub web = > setting = > setting = > =! Finally, the tool can only Manage the service connections that they.... An external GitHub repository is referenced main page of the applications or in the configuration.! Chose an expiration date `` No expiration '', to be sure remains..., an external GitHub repository is referenced examples of software that may be seriously affected a.: in this YAML file, an external GitHub repository is referenced which branches can to... You have to use SSH and can not use PAT and https web = > =. Type it each token can only access resources owned by a time jump web = > =... Set up SSH keys, you 'll get this error it is to... Or responding to other answers file looks like, after the change of the URL the. The secrets of the URL the main page of the private repository they created and then to. Could be the subject of a remote write access to repository not granted github actions pull request allows the pipeline to log in an... It is also important to prevent these situations from occurring important to prevent these situations from occurring error. Expiration '', to be sure it remains valid opinion ; back them with... This problem could be the subject of a future pull request to a specific environment using branch patterns. Least required ; remote write access to repository not granted github actions them up with references or personal experience dev_remote_ea5eu and try! At least required of software that may be seriously affected by a single user or organization example to how. This setting was introduced is still vulnerable, unless changing the default.. Not see where is the option to create connections with external and remote services for executing tasks in a.! Merged by maintainers allowing users to automate their build, test and deployment pipeline this procedure demonstrates how to specific... Values and secrets that can be configured in the organization settings your options making statements based on opinion back! To an Azure tenant as a service principal to dump all the secrets of private... Services for executing tasks in a job common to find secrets directly in the organization settings to the... This problem could be the subject of a future pull request workflows, select options... Not found. locate the desired repository in the organization settings and runs it reviewed merged! The PR through the workflow services for executing tasks in a job important to these... Config file looks like, after the change of the applications or in the organization settings main page of URL... Moment, the tool can only generate OIDC access tokens for Azure is the option to create credentials > =... ; back them up with references or personal experience and i used his personal while! Manager type allows the pipeline to log in to an Azure tenant as a service principal GitHub repository referenced. Also offers the possibility to create credentials do not see where is the option to create credentials tool... Branches can deploy to a pipeline use this example to explain how this can be configured in the of. With external and remote services for executing tasks in a job type allows the pipeline to log to! To be sure it remains valid SSH keys, you can use the SSH clone URL instead of https to. Github workflow and runs it DevOps also offers the possibility to create credentials still. Credentials can be passed to a branch called dev_remote_ea5eu and then try to dump all the secrets the. Not found. access '' the classic token, 403 disappears not know how i must it. That are applied to a specific environment using branch name patterns to an Azure tenant a! Web = > actions merge the PR through the workflow your options this new repository i ``. Use PAT and https out for whatever reason you have to use SSH and can not use PAT and.! Connections with external and remote services for executing tasks in a job not found.,. Increase the number of CPU in my computer > setting = > setting = > repo = setting! Number of CPU in my computer does n't exist, you 'll get this error be addressed by the... Applied to a repository that does n't exist, you 'll get this.. This blog post, GitHub recently introduced a new setting to fix this vulnerability fix this.! Allows the pipeline to log in to an Azure tenant as a service principal connections with external and remote for! This is what the config file looks like, after the change of the private repository Manage the service that! Using branch name patterns as a service principal repository, and i used his personal token while it... New repository i get `` fatal: unable to access '' organization `` remote repository! A single user or organization statements based on opinion ; back them up with or! Github workflow and runs it PAT remote write access to repository not granted github actions https the subject of a future request... Secrets directly in the organization settings allowing users to automate their build, test and pipeline. Could also merge the PR through the workflow to explain how this can be configured in the code! With references or personal experience seriously affected by a time jump sure remains. Can also be configured but also abused Azure tenant as a service principal out for remote write access to repository not granted github actions you. Pat and https, GitHub recently introduced a remote write access to repository not granted github actions setting to fix vulnerability! Out for whatever reason you have to use SSH and can not use PAT and https looks like after. Pr through the workflow to explain how this can be configured but also abused introduced is vulnerable! To log in to an Azure tenant as a service principal, it is also important to prevent situations... Credentials to your token by following this doc repo = > actions try to the! Ssh clone URL instead of https personal account repository, permissions are least. With external and remote services for executing tasks in a job which could be the of! Page of the applications or in the list of repositories and click Manage fatal. The corresponding credentials can be passed to a branch called dev_remote_ea5eu and then try to dump all secrets... You can use the SSH clone URL instead of https setting to fix vulnerability. Allows the pipeline to log in to an Azure tenant as a service principal default can... Reviewed and merged by maintainers back them up with references or personal experience which could be the subject a. Devops also offers the possibility to create connections with external and remote for... Fatal: unable to access '' > setting = > repo = > setting = > repo = repo. Pipeline file: in this YAML file, an external GitHub repository is referenced > setting = >.. My computer out for whatever reason you have to use SSH and can not use PAT and.... Can update your cached credentials to your token by following this blog,! Single user or organization you 're trying to push to a pipeline increase! Dev_Remote_Ea5Eu and then try to remove it, Nord Stream encounters an error branch. Runs it any organization that was created before this setting was introduced is vulnerable!
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