Framework/Core/SVT/ADO/ADO.CommonSVTControls.ps1

Set-StrictMode -Version Latest
class CommonSVTControls: ADOSVTBase {

    hidden [PSObject] $Repos; # This is used for fetching repo details
    hidden [PSObject] $ProjectId;

    CommonSVTControls([string] $organizationName, [SVTResource] $svtResource): Base($organizationName, $svtResource) {

    }

    hidden [ControlResult] CheckInactiveRepo([ControlResult] $controlResult)
    {
        $controlResult.VerificationResult = [VerificationResult]::Failed
        try
        {
            $repoDefnsObj = $this.ResourceContext.ResourceDetails;
            $threshold = $this.ControlSettings.Repo.RepoHistoryPeriodInDays

            $currentDate = Get-Date
            # check if repo is disabled or not
            if ($repoDefnsObj.isDisabled) {
                $controlResult.AddMessage([VerificationResult]::Failed, "Repositories does not have any commits in last $($threshold) days. ");
            }
            else {
                # check if repo has commits in past RepoHistoryPeriodInDays days
                $thresholdDate = $currentDate.AddDays(-$threshold);
                $url = "https://dev.azure.com/$($this.OrganizationContext.OrganizationName)/$($this.ResourceContext.ResourceGroupName)/_apis/git/repositories/$($repoDefnsObj.id)/commits?searchCriteria.fromDate=$($thresholdDate)&&api-version=6.0"
                try {
                    $repoCommitHistoryObj = @();
                    $repoCommitHistoryObj += @([WebRequestHelper]::InvokeGetWebRequest($url))
                    # When there are no commits, CheckMember in the below condition returns false when checknull flag [third param in CheckMember] is not specified (default value is $true). Assiging it $false.
                    if (([Helpers]::CheckMember($repoCommitHistoryObj[0], "count", $false)) -and ($repoCommitHistoryObj[0].count -eq 0)) {
                        $controlResult.AddMessage([VerificationResult]::Failed, "Repositories does not have any commits in last $($threshold) days. ");
                    }
                    else {
                        $controlResult.AddMessage([VerificationResult]::Passed, "Repositories is in active state.");
                    }
                }
                catch {
                    $controlResult.AddMessage([VerificationResult]::Error, "Could not fetch the history of repository [$($repoDefnsObj.name)].");
                    $controlResult.LogException($_)
                }
            }
        }
        catch {
            $controlResult.AddMessage([VerificationResult]::Error, "Could not fetch details of repository.", $_);
            $controlResult.LogException($_)
        }
        return $controlResult
    }

    hidden [ControlResult] CheckRepoRBACAccess([ControlResult] $controlResult) {

        #Control is dissabled mow
        <#
        {
      "ControlID": "ADO_Repository_AuthZ_Grant_Min_RBAC_Access",
      "Description": "All teams/groups must be granted minimum required permissions on repositories.",
      "Id": "Repository110",
      "ControlSeverity": "High",
      "Automated": "Yes",
      "MethodName": "CheckRepoRBACAccess",
      "Rationale": "Granting minimum access by leveraging RBAC feature ensures that users are granted just enough permissions to perform their tasks. This minimizes exposure of the resources in case of user/service account compromise.",
      "Recommendation": "Go to Project Settings --> Repositories --> Permissions --> Validate whether each user/group is granted minimum required access to repositories.",
      "Tags": [
        "SDL",
        "TCP",
        "Automated",
        "AuthZ",
        "RBAC"
      ],
      "Enabled": true
    },
        #>

        $accessList = @()
        #permissionSetId = '2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87' is the std. namespaceID. Refer: https://docs.microsoft.com/en-us/azure/devops/organizations/security/manage-tokens-namespaces?view=azure-devops#namespaces-and-their-ids
        try{

            $url = 'https://dev.azure.com/{0}/_apis/Contribution/HierarchyQuery?api-version=5.0-preview.1' -f $($this.OrganizationContext.OrganizationName);
            $refererUrl = "https://dev.azure.com/$($this.OrganizationContext.OrganizationName)/$($this.ResourceContext.ResourceGroupName)/_settings/repositories?_a=permissions";
            $inputbody = '{"contributionIds":["ms.vss-admin-web.security-view-members-data-provider"],"dataProviderContext":{"properties":{"permissionSetId": "2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87","permissionSetToken":"","sourcePage":{"url":"","routeId":"ms.vss-admin-web.project-admin-hub-route","routeValues":{"project":"","adminPivot":"repositories","controller":"ContributedPage","action":"Execute"}}}}}' | ConvertFrom-Json
            $inputbody.dataProviderContext.properties.sourcePage.url = $refererUrl
            $inputbody.dataProviderContext.properties.sourcePage.routeValues.Project = $this.ResourceContext.ResourceGroupName;
            $inputbody.dataProviderContext.properties.permissionSetToken = "repoV2/$($this.ResourceContext.ResourceDetails.id)"

            # Get list of all users and groups granted permissions on all repositories
            $responseObj = [WebRequestHelper]::InvokePostWebRequest($url, $inputbody);

            # Iterate through each user/group to fetch detailed permissions list
            if([Helpers]::CheckMember($responseObj[0],"dataProviders") -and ($responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider') -and ([Helpers]::CheckMember($responseObj[0].dataProviders.'ms.vss-admin-web.security-view-members-data-provider',"identities")))
            {
                $body = '{"contributionIds":["ms.vss-admin-web.security-view-permissions-data-provider"],"dataProviderContext":{"properties":{"subjectDescriptor":"","permissionSetId": "2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87","permissionSetToken":"","accountName":"","sourcePage":{"url":"","routeId":"ms.vss-admin-web.project-admin-hub-route","routeValues":{"project":"","adminPivot":"repositories","controller":"ContributedPage","action":"Execute"}}}}}' | ConvertFrom-Json
                $body.dataProviderContext.properties.sourcePage.url = $refererUrl
                $body.dataProviderContext.properties.sourcePage.routeValues.Project = $this.ResourceContext.ResourceGroupName;
                $body.dataProviderContext.properties.permissionSetToken = "repoV2/$($this.ResourceContext.ResourceDetails.id)"

                $accessList += $responseObj.dataProviders."ms.vss-admin-web.security-view-members-data-provider".identities | Where-Object { $_.subjectKind -eq "group" } | ForEach-Object {
                    $identity = $_
                    $body.dataProviderContext.properties.accountName = $_.principalName
                    $body.dataProviderContext.properties.subjectDescriptor = $_.descriptor

                    $identityPermissions = [WebRequestHelper]::InvokePostWebRequest($url, $body);
                    $configuredPermissions = $identityPermissions.dataproviders."ms.vss-admin-web.security-view-permissions-data-provider".subjectPermissions | Where-Object {$_.permissionDisplayString -ne 'Not set'}
                    return @{ IdentityName = $identity.DisplayName; IdentityType = $identity.subjectKind; Permissions = ($configuredPermissions | Select-Object @{Name="Name"; Expression = {$_.displayName}},@{Name="Permission"; Expression = {$_.permissionDisplayString}}) }
                }

                $accessList += $responseObj.dataProviders."ms.vss-admin-web.security-view-members-data-provider".identities | Where-Object { $_.subjectKind -eq "user" } | ForEach-Object {
                    $identity = $_
                    $body.dataProviderContext.properties.subjectDescriptor = $_.descriptor

                    $identityPermissions = [WebRequestHelper]::InvokePostWebRequest($url, $body);
                    $configuredPermissions = $identityPermissions.dataproviders."ms.vss-admin-web.security-view-permissions-data-provider".subjectPermissions | Where-Object {$_.permissionDisplayString -ne 'Not set'}
                    return @{ IdentityName = $identity.DisplayName; IdentityType = $identity.subjectKind; Permissions = ($configuredPermissions | Select-Object @{Name="Name"; Expression = {$_.displayName}},@{Name="Permission"; Expression = {$_.permissionDisplayString}}) }
                }
            }

            if(($accessList | Measure-Object).Count -ne 0)
            {
                $accessList= $accessList | Select-Object -Property @{Name="IdentityName"; Expression = {$_.IdentityName}},@{Name="IdentityType"; Expression = {$_.IdentityType}},@{Name="Permissions"; Expression = {$_.Permissions}}
                $controlResult.AddMessage([VerificationResult]::Verify,"Validate that the following identities have been provided with minimum RBAC access to repositories.", $accessList);
                $controlResult.SetStateData("List of identities having access to repositories: ", ($responseObj.dataProviders."ms.vss-admin-web.security-view-members-data-provider".identities | Select-Object -Property @{Name="IdentityName"; Expression = {$_.FriendlyDisplayName}},@{Name="IdentityType"; Expression = {$_.subjectKind}},@{Name="Scope"; Expression = {$_.Scope}}));
            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Passed,"No identities have been explicitly provided access to repositories.");
            }
            $responseObj = $null;

        }
        catch{
            $controlResult.AddMessage([VerificationResult]::Manual,"Unable to fetch repositories permission details. $($_) Please verify from portal all teams/groups are granted minimum required permissions.");
            $controlResult.LogException($_)
        }

        return $controlResult
    }

    hidden [PSObject] FetchRepositoriesList() {
        if($null -eq $this.Repos) {
            # fetch repositories
            $repoDefnURL = ("https://dev.azure.com/$($this.OrganizationContext.OrganizationName)/$($this.ResourceContext.ResourceGroupName)/_apis/git/repositories?api-version=6.1-preview.1")
            try {
                $repoDefnsObj = [WebRequestHelper]::InvokeGetWebRequest($repoDefnURL);
                $this.Repos = $repoDefnsObj;
            }
            catch {
                $this.Repos = $null
            }
        }
        return $this.Repos
    }

    hidden [ControlResult] CheckBroaderGroupAccessOnFeeds([ControlResult] $controlResult)
    {
        $controlResult.VerificationResult = [VerificationResult]::Failed
        try
        {
            $RestrictedBroaderGroupsForFeeds = $null;
            if ([Helpers]::CheckMember($this.ControlSettings, "Feed.RestrictedBroaderGroupsForFeeds")) {
                $restrictedBroaderGroupsForFeeds = $this.ControlSettings.Feed.RestrictedBroaderGroupsForFeeds

                #GET https://feeds.dev.azure.com/{organization}/{project}/_apis/packaging/Feeds/{feedId}/permissions?api-version=6.0-preview.1
                #Using visualstudio api because new api (dev.azure.com) is giving null in the displayName property.
                $url = 'https://{0}.feeds.visualstudio.com/{1}/_apis/Packaging/Feeds/{2}/Permissions?includeIds=true&excludeInheritedPermissions=false&includeDeletedFeeds=false' -f $this.OrganizationContext.OrganizationName, $this.ResourceContext.ResourceGroupName, $this.ResourceContext.ResourceDetails.Id;
                $feedPermissionList = @([WebRequestHelper]::InvokeGetWebRequest($url));
                $excesiveFeedsPermissions = @(($feedPermissionList | Where-Object {$_.role -eq "administrator" -or $_.role -eq "collaborator" -or $_.role -eq "contributor"}) | Select-Object -Property @{Name="FeedName"; Expression = {$this.ResourceContext.ResourceName}},@{Name="Role"; Expression = {$_.role}},@{Name="DisplayName"; Expression = {$_.displayName}}) ;
                $feedWithBroaderGroup = @($excesiveFeedsPermissions | Where-Object { $restrictedBroaderGroupsForFeeds -contains $_.DisplayName.split('\')[-1] })
                $feedWithroaderGroupCount = $feedWithBroaderGroup.count;

                if ($feedWithroaderGroupCount -gt 0)
                {
                    $controlResult.AddMessage([VerificationResult]::Failed, "Count of broader groups that have administrator/contributor/collaborator access to feed: $($feedWithroaderGroupCount)")

                    $display = ($feedWithBroaderGroup |  FT FeedName, Role, DisplayName -AutoSize | Out-String -Width 512)
                    $controlResult.AddMessage("`nList of groups: ", $display)
                }
                else
                {
                    $controlResult.AddMessage([VerificationResult]::Passed,  "Feed is not granted with administrator/contributor/collaborator permission to broad groups.");
                }
                $controlResult.AddMessage("`nNote: `nThe following groups are considered 'broader groups': `n$($restrictedBroaderGroupsForFeeds | FT | out-string)");
            }
            else
            {
                $controlResult.AddMessage([VerificationResult]::Error,  "List of broader groups for feeds is not defined in control settings for your organization.");
            }
        }
        catch
        {
            $controlResult.AddMessage([VerificationResult]::Error,  "Could not fetch feed permissions.");
            $controlResult.LogException($_)
        }
        return $controlResult
    }

    hidden [ControlResult] CheckSecureFilesPermission([ControlResult] $controlResult)
    {
        $controlResult.VerificationResult = [VerificationResult]::Failed
        try {
            $url = "https://dev.azure.com/{0}/{1}/_apis/build/authorizedresources?type=securefile&id={2}&api-version=6.0-preview.1" -f $this.OrganizationContext.OrganizationName, $this.ResourceContext.ResourceGroupName, $this.ResourceContext.ResourceDetails.Id
            $secureFileObj = @([WebRequestHelper]::InvokeGetWebRequest($url));

            if(($secureFileObj.Count -gt 0) -and [Helpers]::CheckMember($secureFileObj[0], "authorized") -and  $secureFileObj[0].authorized -eq $true) {
                $controlResult.AddMessage([VerificationResult]::Failed, "Secure file is accesible to all pipelines.");
            }
            else {
                $controlResult.AddMessage([VerificationResult]::Passed, "Secure file is not accesible to all pipelines.");
            }
        }
        catch {
            $controlResult.AddMessage([VerificationResult]::Error, "Could not fetch authorization details of secure file.");
            $controlResult.LogException($_)
        }
        return $controlResult
    }
}

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