diff options
| -rw-r--r-- | changelogs/unreleased/jprovazn-upload-symlink.yml | 5 | ||||
| -rw-r--r-- | lib/gitlab/middleware/multipart.rb | 2 | ||||
| -rw-r--r-- | lib/uploaded_file.rb | 5 | ||||
| -rw-r--r-- | spec/lib/gitlab/middleware/multipart_spec.rb | 27 |
4 files changed, 36 insertions, 3 deletions
diff --git a/changelogs/unreleased/jprovazn-upload-symlink.yml b/changelogs/unreleased/jprovazn-upload-symlink.yml new file mode 100644 index 00000000000..265791d332f --- /dev/null +++ b/changelogs/unreleased/jprovazn-upload-symlink.yml @@ -0,0 +1,5 @@ +--- +title: Add /uploads subdirectory to allowed upload paths. +merge_request: +author: +type: fixed diff --git a/lib/gitlab/middleware/multipart.rb b/lib/gitlab/middleware/multipart.rb index 9753be6d5c3..18f91db98fc 100644 --- a/lib/gitlab/middleware/multipart.rb +++ b/lib/gitlab/middleware/multipart.rb @@ -84,7 +84,7 @@ module Gitlab def open_file(params, key) ::UploadedFile.from_params( params, key, - Gitlab.config.uploads.storage_path) + [FileUploader.root, Gitlab.config.uploads.storage_path]) end end diff --git a/lib/uploaded_file.rb b/lib/uploaded_file.rb index 5dc85b2baea..4b9cb59eab5 100644 --- a/lib/uploaded_file.rb +++ b/lib/uploaded_file.rb @@ -28,7 +28,7 @@ class UploadedFile @tempfile = File.new(path, 'rb') end - def self.from_params(params, field, upload_path) + def self.from_params(params, field, upload_paths) unless params["#{field}.path"] raise InvalidPathError, "file is invalid" if params["#{field}.remote_id"] @@ -37,7 +37,8 @@ class UploadedFile file_path = File.realpath(params["#{field}.path"]) - unless self.allowed_path?(file_path, [upload_path, Dir.tmpdir].compact) + paths = Array(upload_paths) << Dir.tmpdir + unless self.allowed_path?(file_path, paths.compact) raise InvalidPathError, "insecure path used '#{file_path}'" end diff --git a/spec/lib/gitlab/middleware/multipart_spec.rb b/spec/lib/gitlab/middleware/multipart_spec.rb index b4837a1689a..f788f8ee276 100644 --- a/spec/lib/gitlab/middleware/multipart_spec.rb +++ b/spec/lib/gitlab/middleware/multipart_spec.rb @@ -75,6 +75,33 @@ describe Gitlab::Middleware::Multipart do it_behaves_like 'multipart upload files' end + it 'allows symlinks for uploads dir' do + Tempfile.open('two-levels') do |tempfile| + symlinked_dir = '/some/dir/uploads' + symlinked_path = File.join(symlinked_dir, File.basename(tempfile.path)) + env = post_env({ 'file' => symlinked_path }, { 'file.name' => original_filename, 'file.path' => symlinked_path }, Gitlab::Workhorse.secret, 'gitlab-workhorse') + + allow(FileUploader).to receive(:root).and_return(symlinked_dir) + allow(UploadedFile).to receive(:allowed_paths).and_return([symlinked_dir, Gitlab.config.uploads.storage_path]) + allow(File).to receive(:realpath).and_call_original + allow(File).to receive(:realpath).with(symlinked_dir).and_return(Dir.tmpdir) + allow(File).to receive(:realpath).with(symlinked_path).and_return(tempfile.path) + allow(File).to receive(:exist?).and_call_original + allow(File).to receive(:exist?).with(symlinked_dir).and_return(true) + + # override Dir.tmpdir because this dir is in the list of allowed paths + # and it would match FileUploader.root path (which in this test is linked + # to /tmp too) + allow(Dir).to receive(:tmpdir).and_return(File.join(Dir.tmpdir, 'tmpsubdir')) + + expect(app).to receive(:call) do |env| + expect(Rack::Request.new(env).params['file']).to be_a(::UploadedFile) + end + + middleware.call(env) + end + end + def post_env(rewritten_fields, params, secret, issuer) token = JWT.encode({ 'iss' => issuer, 'rewritten_fields' => rewritten_fields }, secret, 'HS256') Rack::MockRequest.env_for( |