fedward/distraction.party
1
0
Fork 0
forked from AkkomaGang/akkoma
Code Issues Pull requests Projects Releases Packages Wiki Activity

Merge branch 'develop' into stable

Browse source
This commit is contained in:
FloatingGhost 2023-08-05 13:36:43 +01:00
commit a4bab7bdfa
4 changed files with 22 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
CHANGELOG.md
View file

@ -39,7 +39,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
## Security
- Add `no_new_privs` hardening to OpenRC and systemd service files
- Ensured that XML parsers cannot load external entities (thanks @Mae@is.badat.dev!)
- XML parsers cannot load any entities (thanks @Mae@is.badat.dev!)
- Reduced permissions of config files and directories, distros requiring greater permissions like group-read need to pre-create the directories
## Removed

2
lib/pleroma/web/xml.ex
View file

@ -31,7 +31,7 @@ def parse_document(text) do
|> :binary.bin_to_list()
|> :xmerl_scan.string(
quiet: true,
fetch_fun: fn _, _ -> raise "Resolving external entities not supported" end
allow_entities: false
)
{:ok, doc}

15
test/fixtures/xml_billion_laughs.xml vendored Normal file
View file

@ -0,0 +1,15 @@
<?xml version="1.0"?>
<!DOCTYPE lolz [
<!ENTITY lol "lol">
<!ELEMENT lolz (#PCDATA)>
<!ENTITY lol1 "&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;&lol;">
<!ENTITY lol2 "&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;&lol1;">
<!ENTITY lol3 "&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;&lol2;">
<!ENTITY lol4 "&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;&lol3;">
<!ENTITY lol5 "&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;&lol4;">
<!ENTITY lol6 "&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;&lol5;">
<!ENTITY lol7 "&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;&lol6;">
<!ENTITY lol8 "&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;&lol7;">
<!ENTITY lol9 "&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;&lol8;">
]>
<lolz>&lol9;</lolz>

5
test/pleroma/web/xml_test.exs
View file

@ -3,6 +3,11 @@ defmodule Pleroma.Web.XMLTest do
alias Pleroma.Web.XML
test "refuses to parse any entities from XML" do
data = File.read!("test/fixtures/xml_billion_laughs.xml")
assert(:error == XML.parse_document(data))
end
test "refuses to load external entities from XML" do
data = File.read!("test/fixtures/xml_external_entities.xml")
assert(:error == XML.parse_document(data))