Merge branch 'security/digest-signature-validation' into 'develop'

digest signature validation

See merge request pleroma/pleroma!260
This commit is contained in:
lambda 2018-08-01 08:11:28 +00:00
commit ab4b4538ce
4 changed files with 29 additions and 2 deletions

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@ -0,0 +1,10 @@
defmodule Pleroma.Web.Plugs.DigestPlug do
alias Plug.Conn
require Logger
def read_body(conn, opts) do
{:ok, body, conn} = Conn.read_body(conn, opts)
digest = "SHA-256=" <> (:crypto.hash(:sha256, body) |> Base.encode64())
{:ok, body, Conn.assign(conn, :digest, digest)}
end
end

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@ -19,6 +19,8 @@ def call(conn, _opts) do
cond do cond do
signature && String.contains?(signature, user) -> signature && String.contains?(signature, user) ->
# set (request-target) header to the appropriate value
# we also replace the digest header with the one we computed
conn = conn =
conn conn
|> put_req_header( |> put_req_header(
@ -26,6 +28,14 @@ def call(conn, _opts) do
String.downcase("#{conn.method}") <> " #{conn.request_path}" String.downcase("#{conn.method}") <> " #{conn.request_path}"
) )
conn =
if conn.assigns[:digest] do
conn
|> put_req_header("digest", conn.assigns[:digest])
else
conn
end
assign(conn, :valid_signature, HTTPSignatures.validate_conn(conn)) assign(conn, :valid_signature, HTTPSignatures.validate_conn(conn))
signature -> signature ->

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@ -641,8 +641,14 @@ def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
Logger.info("Federating #{id} to #{inbox}") Logger.info("Federating #{id} to #{inbox}")
host = URI.parse(inbox).host host = URI.parse(inbox).host
digest = "SHA-256=" <> (:crypto.hash(:sha256, json) |> Base.encode64())
signature = signature =
Pleroma.Web.HTTPSignatures.sign(actor, %{host: host, "content-length": byte_size(json)}) Pleroma.Web.HTTPSignatures.sign(actor, %{
host: host,
"content-length": byte_size(json),
digest: digest
})
@httpoison.post( @httpoison.post(
inbox, inbox,

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@ -35,7 +35,8 @@ defmodule Pleroma.Web.Endpoint do
parsers: [:urlencoded, :multipart, :json], parsers: [:urlencoded, :multipart, :json],
pass: ["*/*"], pass: ["*/*"],
json_decoder: Jason, json_decoder: Jason,
length: Application.get_env(:pleroma, :instance) |> Keyword.get(:upload_limit) length: Application.get_env(:pleroma, :instance) |> Keyword.get(:upload_limit),
body_reader: {Pleroma.Web.Plugs.DigestPlug, :read_body, []}
) )
plug(Plug.MethodOverride) plug(Plug.MethodOverride)