diff options
author | Francisco Javier López <fjlopez@gitlab.com> | 2019-07-02 19:38:23 +0300 |
---|---|---|
committer | Francisco Javier López <fjlopez@gitlab.com> | 2019-07-15 10:21:20 +0300 |
commit | f5c1cd489834e824c83f2ae909cd0dd41fb95dab (patch) | |
tree | bfbf073fae7b2a5dedb63118cc3865036a92c847 /spec | |
parent | e674a9d97822553c930062b9c5f4d4a349d39c11 (diff) |
Fix Server Side Request Forgery mitigation bypass
When we can't resolve the hostname or it is invalid, we shouldn't
even perform the request. This fix also fixes the problem the
SSRF rebinding attack.
We can't stub feature flags outside example blocks. Nevertheless,
there are some actions that calls the UrlBlocker, that are performed
outside example blocks, ie: `set` instruction.
That's why we have to use some signalign mechanism outside the scope
of the specs.
Diffstat (limited to 'spec')
-rw-r--r-- | spec/lib/gitlab/url_blocker_spec.rb | 44 | ||||
-rw-r--r-- | spec/spec_helper.rb | 1 |
2 files changed, 33 insertions, 12 deletions
diff --git a/spec/lib/gitlab/url_blocker_spec.rb b/spec/lib/gitlab/url_blocker_spec.rb index f8b0cbfb6f6..0fab890978a 100644 --- a/spec/lib/gitlab/url_blocker_spec.rb +++ b/spec/lib/gitlab/url_blocker_spec.rb @@ -68,6 +68,16 @@ describe Gitlab::UrlBlocker do expect(uri).to eq(Addressable::URI.parse('https://example.org')) expect(hostname).to eq(nil) end + + context 'when it cannot be resolved' do + let(:import_url) { 'http://foobar.x' } + + it 'raises error' do + stub_env('RSPEC_ALLOW_INVALID_URLS', 'false') + + expect { described_class.validate!(import_url) }.to raise_error(described_class::BlockedUrlError) + end + end end context 'when the URL hostname is an IP address' do @@ -79,6 +89,16 @@ describe Gitlab::UrlBlocker do expect(uri).to eq(Addressable::URI.parse('https://93.184.216.34')) expect(hostname).to be(nil) end + + context 'when it is invalid' do + let(:import_url) { 'http://1.1.1.1.1' } + + it 'raises an error' do + stub_env('RSPEC_ALLOW_INVALID_URLS', 'false') + + expect { described_class.validate!(import_url) }.to raise_error(described_class::BlockedUrlError) + end + end end end end @@ -180,8 +200,6 @@ describe Gitlab::UrlBlocker do end it 'returns true for a non-alphanumeric hostname' do - stub_resolv - aggregate_failures do expect(described_class).to be_blocked_url('ssh://-oProxyCommand=whoami/a') @@ -300,10 +318,6 @@ describe Gitlab::UrlBlocker do end context 'when enforce_user is' do - before do - stub_resolv - end - context 'false (default)' do it 'does not block urls with a non-alphanumeric username' do expect(described_class).not_to be_blocked_url('ssh://-oProxyCommand=whoami@example.com/a') @@ -351,6 +365,18 @@ describe Gitlab::UrlBlocker do expect(described_class.blocked_url?('https://gitlab.com/foo/foo.bar', ascii_only: true)).to be true end end + + it 'blocks urls with invalid ip address' do + stub_env('RSPEC_ALLOW_INVALID_URLS', 'false') + + expect(described_class).to be_blocked_url('http://8.8.8.8.8') + end + + it 'blocks urls whose hostname cannot be resolved' do + stub_env('RSPEC_ALLOW_INVALID_URLS', 'false') + + expect(described_class).to be_blocked_url('http://foobar.x') + end end describe '#validate_hostname' do @@ -382,10 +408,4 @@ describe Gitlab::UrlBlocker do end end end - - # Resolv does not support resolving UTF-8 domain names - # See https://bugs.ruby-lang.org/issues/4270 - def stub_resolv - allow(Resolv).to receive(:getaddresses).and_return([]) - end end diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb index 95e0d8858b9..089dbc09aa3 100644 --- a/spec/spec_helper.rb +++ b/spec/spec_helper.rb @@ -3,6 +3,7 @@ SimpleCovEnv.start! ENV["RAILS_ENV"] = 'test' ENV["IN_MEMORY_APPLICATION_SETTINGS"] = 'true' +ENV["RSPEC_ALLOW_INVALID_URLS"] = 'true' require File.expand_path('../config/environment', __dir__) require 'rspec/rails' |