diff options
author | John Jarvis <jarv@gitlab.com> | 2018-12-26 13:31:27 +0300 |
---|---|---|
committer | John Jarvis <jarv@gitlab.com> | 2018-12-26 13:31:27 +0300 |
commit | c34330b41bb97a5ca981b2ff93465266bc7d6954 (patch) | |
tree | 54067f4d184461af718220246c6b674c8a4b6da7 | |
parent | d2120ff1e705799752e7d9704cae3f1896d8e186 (diff) | |
parent | 326f204f096383d4037b28c7c4e4d0361e5ffda7 (diff) |
Merge branch 'security-bvl-fix-cross-project-mr-exposure-11-6' into 'security-11-6'
[11.6] Validate projects in MR build service
See merge request gitlab/gitlabhq!2703
4 files changed, 111 insertions, 10 deletions
diff --git a/app/services/merge_requests/build_service.rb b/app/services/merge_requests/build_service.rb index 36767621d74..48419da98ad 100644 --- a/app/services/merge_requests/build_service.rb +++ b/app/services/merge_requests/build_service.rb @@ -18,7 +18,7 @@ module MergeRequests merge_request.source_project = find_source_project merge_request.target_project = find_target_project merge_request.target_branch = find_target_branch - merge_request.can_be_created = branches_valid? + merge_request.can_be_created = projects_and_branches_valid? # compare branches only if branches are valid, otherwise # compare_branches may raise an error @@ -49,15 +49,19 @@ module MergeRequests to: :merge_request def find_source_project - return source_project if source_project.present? && can?(current_user, :read_project, source_project) + return source_project if source_project.present? && can?(current_user, :create_merge_request_from, source_project) project end def find_target_project - return target_project if target_project.present? && can?(current_user, :read_project, target_project) + return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project) - project.default_merge_request_target + target_project = project.default_merge_request_target + + return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project) + + project end def find_target_branch @@ -72,10 +76,11 @@ module MergeRequests params[:target_branch].present? end - def branches_valid? + def projects_and_branches_valid? + return false if source_project.nil? || target_project.nil? return false unless source_branch_specified? || target_branch_specified? - validate_branches + validate_projects_and_branches errors.blank? end @@ -94,7 +99,12 @@ module MergeRequests end end - def validate_branches + def validate_projects_and_branches + merge_request.validate_target_project + merge_request.validate_fork + + return if errors.any? + add_error('You must select source and target branch') unless branches_present? add_error('You must select different branches') if same_source_and_target? add_error("Source branch \"#{source_branch}\" does not exist") unless source_branch_exists? diff --git a/changelogs/unreleased/security-bvl-fix-cross-project-mr-exposure.yml b/changelogs/unreleased/security-bvl-fix-cross-project-mr-exposure.yml new file mode 100644 index 00000000000..11aae4428fb --- /dev/null +++ b/changelogs/unreleased/security-bvl-fix-cross-project-mr-exposure.yml @@ -0,0 +1,5 @@ +--- +title: Don't expose cross project repositories through diffs when creating merge reqeusts +merge_request: +author: +type: security diff --git a/spec/features/merge_request/user_tries_to_access_private_repository_through_new_mr_spec.rb b/spec/features/merge_request/user_tries_to_access_private_repository_through_new_mr_spec.rb new file mode 100644 index 00000000000..9318b5f1ebb --- /dev/null +++ b/spec/features/merge_request/user_tries_to_access_private_repository_through_new_mr_spec.rb @@ -0,0 +1,37 @@ +require 'spec_helper' + +describe 'Merge Request > Tries to access private repo of public project' do + let(:current_user) { create(:user) } + let(:private_project) do + create(:project, :public, :repository, + path: 'nothing-to-see-here', + name: 'nothing to see here', + repository_access_level: ProjectFeature::PRIVATE) + end + let(:owned_project) do + create(:project, :public, :repository, + namespace: current_user.namespace, + creator: current_user) + end + + context 'when the user enters the querystring info for the other project' do + let(:mr_path) do + project_new_merge_request_diffs_path( + owned_project, + merge_request: { + source_project_id: private_project.id, + source_branch: 'feature' + } + ) + end + + before do + sign_in current_user + visit mr_path + end + + it "does not mention the project the user can't see the repo of" do + expect(page).not_to have_content('nothing-to-see-here') + end + end +end diff --git a/spec/services/merge_requests/build_service_spec.rb b/spec/services/merge_requests/build_service_spec.rb index 1894d8c8d0e..536d0d345a4 100644 --- a/spec/services/merge_requests/build_service_spec.rb +++ b/spec/services/merge_requests/build_service_spec.rb @@ -3,6 +3,7 @@ require 'spec_helper' describe MergeRequests::BuildService do using RSpec::Parameterized::TableSyntax include RepoHelpers + include ProjectForksHelper let(:project) { create(:project, :repository) } let(:source_project) { nil } @@ -49,7 +50,7 @@ describe MergeRequests::BuildService do describe '#execute' do it 'calls the compare service with the correct arguments' do - allow_any_instance_of(described_class).to receive(:branches_valid?).and_return(true) + allow_any_instance_of(described_class).to receive(:projects_and_branches_valid?).and_return(true) expect(CompareService).to receive(:new) .with(project, Gitlab::Git::BRANCH_REF_PREFIX + source_branch) .and_call_original @@ -393,11 +394,27 @@ describe MergeRequests::BuildService do end end + context 'target_project is set but repo is not accessible by current_user' do + let(:target_project) do + create(:project, :public, :repository, repository_access_level: ProjectFeature::PRIVATE) + end + + it 'sets target project correctly' do + expect(merge_request.target_project).to eq(project) + end + end + context 'source_project is set and accessible by current_user' do let(:source_project) { create(:project, :public, :repository)} let(:commits) { Commit.decorate([commit_1], project) } - it 'sets target project correctly' do + before do + # To create merge requests _from_ a project the user needs at least + # developer access + source_project.add_developer(user) + end + + it 'sets source project correctly' do expect(merge_request.source_project).to eq(source_project) end end @@ -406,11 +423,43 @@ describe MergeRequests::BuildService do let(:source_project) { create(:project, :private, :repository)} let(:commits) { Commit.decorate([commit_1], project) } - it 'sets target project correctly' do + it 'sets source project correctly' do + expect(merge_request.source_project).to eq(project) + end + end + + context 'source_project is set but the user cannot create merge requests from the project' do + let(:source_project) do + create(:project, :public, :repository, merge_requests_access_level: ProjectFeature::PRIVATE) + end + + it 'sets the source_project correctly' do expect(merge_request.source_project).to eq(project) end end + context 'target_project is not in the fork network of source_project' do + let(:target_project) { create(:project, :public, :repository) } + + it 'adds an error to the merge request' do + expect(merge_request.errors[:validate_fork]).to contain_exactly('Source project is not a fork of the target project') + end + end + + context 'target_project is in the fork network of source project but no longer accessible' do + let!(:project) { fork_project(target_project, user, namespace: user.namespace, repository: true) } + let(:source_project) { project } + let(:target_project) { create(:project, :public, :repository) } + + before do + target_project.update(visibility_level: Gitlab::VisibilityLevel::PRIVATE) + end + + it 'sets the target_project correctly' do + expect(merge_request.target_project).to eq(project) + end + end + context 'when specifying target branch in the description' do let(:description) { "A merge request targeting another branch\n\n/target_branch with-codeowners" } |