Commit b04c737d authored by Thiago Presa's avatar Thiago Presa

Merge branch 'sh-block-other-localhost' into 'master'

Block additional localhost addresses in UrlBlocker

See merge request gitlab/gitlabhq!2487
parent 5342df04
---
title: Block loopback addresses in UrlBlocker
merge_request:
author:
type: security
......@@ -30,6 +30,7 @@ module Gitlab
end
validate_localhost!(addrs_info) unless allow_localhost
validate_loopback!(addrs_info) unless allow_localhost
validate_local_network!(addrs_info) unless allow_local_network
validate_link_local!(addrs_info) unless allow_local_network
......@@ -84,6 +85,12 @@ module Gitlab
raise BlockedUrlError, "Requests to localhost are not allowed"
end
def validate_loopback!(addrs_info)
return unless addrs_info.any? { |addr| addr.ipv4_loopback? || addr.ipv6_loopback? }
raise BlockedUrlError, "Requests to loopback addresses are not allowed"
end
def validate_local_network!(addrs_info)
return unless addrs_info.any? { |addr| addr.ipv4_private? || addr.ipv6_sitelocal? }
......
......@@ -29,6 +29,16 @@ describe Gitlab::UrlBlocker do
expect(described_class.blocked_url?('https://gitlab.com/foo/foo.git', protocols: ['http'])).to be true
end
it 'returns true for localhost IPs' do
expect(described_class.blocked_url?('https://0.0.0.0/foo/foo.git')).to be true
expect(described_class.blocked_url?('https://[::1]/foo/foo.git')).to be true
expect(described_class.blocked_url?('https://127.0.0.1/foo/foo.git')).to be true
end
it 'returns true for loopback IP' do
expect(described_class.blocked_url?('https://127.0.0.2/foo/foo.git')).to be true
end
it 'returns true for alternative version of 127.0.0.1 (0177.1)' do
expect(described_class.blocked_url?('https://0177.1:65535/foo/foo.git')).to be true
end
......@@ -84,6 +94,16 @@ describe Gitlab::UrlBlocker do
end
end
it 'allows localhost endpoints' do
expect(described_class).not_to be_blocked_url('http://0.0.0.0', allow_localhost: true)
expect(described_class).not_to be_blocked_url('http://localhost', allow_localhost: true)
expect(described_class).not_to be_blocked_url('http://127.0.0.1', allow_localhost: true)
end
it 'allows loopback endpoints' do
expect(described_class).not_to be_blocked_url('http://127.0.0.2', allow_localhost: true)
end
it 'allows IPv4 link-local endpoints' do
expect(described_class).not_to be_blocked_url('http://169.254.169.254')
expect(described_class).not_to be_blocked_url('http://169.254.168.100')
......@@ -122,7 +142,7 @@ describe Gitlab::UrlBlocker do
end
def stub_domain_resolv(domain, ip)
allow(Addrinfo).to receive(:getaddrinfo).with(domain, any_args).and_return([double(ip_address: ip, ipv4_private?: true, ipv6_link_local?: false)])
allow(Addrinfo).to receive(:getaddrinfo).with(domain, any_args).and_return([double(ip_address: ip, ipv4_private?: true, ipv6_link_local?: false, ipv4_loopback?: false, ipv6_loopback?: false)])
end
def unstub_domain_resolv
......
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