Get single Vulnerability API call

ee/lib/api/vulnerabilities.rb

@@ -13,9 +13,13 @@ module API
         Vulnerability.with_findings.find(params[:id])
       end
 
+      def authorize_vulnerability!(vulnerability, action)
+        authorize! action, vulnerability.project
+      end
+
       def find_and_authorize_vulnerability!(action)
         find_vulnerability!.tap do |vulnerability|
-          authorize! action, vulnerability.project
+          authorize_vulnerability!(vulnerability, action)
         end
       end
 
@@ -38,6 +42,15 @@ module API
       requires :id, type: String, desc: 'The ID of a vulnerability'
     end
     resource :vulnerabilities do
+      desc 'Get a vulnerability' do
+        success EE::API::Entities::Vulnerability
+      end
+      get ':id' do
+        vulnerability = Vulnerability.find(params[:id])
+        authorize_vulnerability!(vulnerability, :read_project_security_dashboard)
+        render_vulnerability(vulnerability)
+      end
+
       desc 'Resolve a vulnerability' do
         success EE::API::Entities::Vulnerability
       end

ee/spec/fixtures/api/schemas/public_api/v4/vulnerability.json

@@ -25,14 +25,9 @@
       ]
     },
     "project": {
-      "required": ["id", "name", "name_with_namespace", "description", "path", "path_with_namespace", "created_at"],
-      "id": { "type": "integer" },
-      "name": { "type": "string" },
-      "name_with_namespace": { "type": "string" },
-      "description": { "type": ["string", "null"] },
-      "path": { "type": "string" },
-      "path_with_namespace": { "type": "string" },
-      "created_at": { "type": "date" }
+      "oneOf": [
+        { "$ref": "../../../../../../../spec/fixtures/api/schemas/public_api/v4/project/identity.json" }
+      ]
     },
     "author_id": { "type": "integer" },
     "updated_by_id": { "type": ["integer", "null"] },

ee/spec/requests/api/vulnerabilities_spec.rb

@@ -38,6 +38,16 @@ describe API::Vulnerabilities do
     end
   end
 
+  shared_examples 'responds with "not found" for an unknown vulnerability ID' do
+    let(:vulnerability_id) { 0 }
+
+    it do
+      subject
+
+      expect(response).to have_gitlab_http_status(404)
+    end
+  end
+
   describe 'GET /projects/:id/vulnerabilities' do
     let_it_be(:project) { create(:project, :with_vulnerabilities) }
 
@@ -84,6 +94,43 @@ describe API::Vulnerabilities do
     end
   end
 
+  describe 'GET /vulnerabilities/:id' do
+    let_it_be(:project) { create(:project, :with_vulnerabilities) }
+    let_it_be(:vulnerability) { project.vulnerabilities.first }
+    let(:vulnerability_id) { vulnerability.id }
+
+    subject(:get_vulnerability) { get api("/vulnerabilities/#{vulnerability_id}", user) }
+
+    context 'with an authorized user with proper permissions' do
+      before do
+        project.add_developer(user)
+      end
+
+      it 'returns the desired vulnerability' do
+        get_vulnerability
+
+        expect(response).to have_gitlab_http_status(200)
+        expect(response).to match_response_schema('public_api/v4/vulnerability', dir: 'ee')
+        expect(json_response['id']).to eq vulnerability_id
+      end
+
+      it_behaves_like 'responds with "not found" for an unknown vulnerability ID'
+      it_behaves_like 'forbids actions on vulnerability in case of disabled features'
+    end
+
+    describe 'permissions' do
+      it { expect { get_vulnerability }.to be_allowed_for(:admin) }
+      it { expect { get_vulnerability }.to be_allowed_for(:owner).of(project) }
+      it { expect { get_vulnerability }.to be_allowed_for(:maintainer).of(project) }
+      it { expect { get_vulnerability }.to be_allowed_for(:developer).of(project) }
+      it { expect { get_vulnerability }.to be_allowed_for(:auditor) }
+
+      it { expect { get_vulnerability }.to be_denied_for(:reporter).of(project) }
+      it { expect { get_vulnerability }.to be_denied_for(:guest).of(project) }
+      it { expect { get_vulnerability }.to be_denied_for(:anonymous) }
+    end
+  end
+
   describe 'POST /projects/:id/vulnerabilities' do
     let_it_be(:project) { create(:project) }
     let(:finding) { create(:vulnerabilities_occurrence, project: project) }
@@ -162,8 +209,9 @@ describe API::Vulnerabilities do
 
     let_it_be(:project) { create(:project, :with_vulnerabilities) }
     let(:vulnerability) { project.vulnerabilities.first }
+    let(:vulnerability_id) { vulnerability.id }
 
-    subject(:dismiss_vulnerability) { post api("/vulnerabilities/#{vulnerability.id}/dismiss", user) }
+    subject(:dismiss_vulnerability) { post api("/vulnerabilities/#{vulnerability_id}/dismiss", user) }
 
     context 'with an authorized user with proper permissions' do
       before do
@@ -183,6 +231,8 @@ describe API::Vulnerabilities do
         end
       end
 
+      it_behaves_like 'responds with "not found" for an unknown vulnerability ID'
+
       context 'when there is a dismissal error' do
         before do
           Grape::Endpoint.before_each do |endpoint|
@@ -239,15 +289,16 @@ describe API::Vulnerabilities do
     end
   end
 
-  describe 'POST /vulnerabilities:id/resolve' do
+  describe 'POST /vulnerabilities/:id/resolve' do
     before do
       create_list(:vulnerabilities_finding, 2, vulnerability: vulnerability)
     end
 
     let_it_be(:project) { create(:project, :with_vulnerabilities) }
     let(:vulnerability) { project.vulnerabilities.first }
+    let(:vulnerability_id) { vulnerability.id }
 
-    subject(:resolve_vulnerability) { post api("/vulnerabilities/#{vulnerability.id}/resolve", user) }
+    subject(:resolve_vulnerability) { post api("/vulnerabilities/#{vulnerability_id}/resolve", user) }
 
     context 'with an authorized user with proper permissions' do
       before do
@@ -267,6 +318,8 @@ describe API::Vulnerabilities do
         end
       end
 
+      it_behaves_like 'responds with "not found" for an unknown vulnerability ID'
+
       context 'when the vulnerability is already resolved' do
         let(:vulnerability) { create(:vulnerability, :resolved, project: project) }