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blog/mcasbo: explain room versions(???), mention Conduit and Matrix ACL mess and add references for those

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Resolves: #270
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Aminda Suomalainen 2022-01-10 21:51:14 +02:00
parent ae6421ffe0
commit 1413b3b299
Signed by: Mikaela
SSH Key Fingerprint: SHA256:CXLULpqNBdUKB6E6fLA1b/4SzG0HvKD19PbIePU175Q
1 changed files with 10 additions and 4 deletions
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blog/_posts/2021-12-05-matrix-community-abuse-security-by-obscurity.md
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@ -28,12 +28,13 @@ smaller steps:
1. ***WARNING*** The room version number here is configured in Jekyll site 1. ***WARNING*** The room version number here is configured in Jekyll site
variable, not one specific to this post. variable, not one specific to this post.
2. ***WARNING*** You should check [the Matrix spec](https://spec.matrix.org/latest/rooms/) 2. ***WARNING*** You should check [the Matrix spec](https://spec.matrix.org/latest/rooms/)
for the latest stable room version. for the latest stable room version. Or maybe the [unstable spec](https://spec.matrix.org/unstable/rooms/)?
Or maybe you should just [search GitHub](https://github.com/matrix-org/matrix-doc/issues?q=room%20version)?
I have no idea how that works as the time of writing both are missing room versions 8 and 9.
3. ***WARNING*** Traditionally homeservers by other parties than Matrix.org 3. ***WARNING*** Traditionally homeservers by other parties than Matrix.org
(read Synapse) lag behind on supported room versions and you may break (read Synapse) lag behind on supported room versions and you may break
your room for people using those. At the time of adding this note (2021-12-14), the your room for people using those. At the time of adding this note (2021-12-14), the
spec v1.1 is a month and couple of days old (2021-09-11) and room version spec v1.1 is a month and couple of days old (2021-09-11) and [room version 7 is not implemented by Conduit](https://gitlab.com/famedly/conduit/-/issues/161).
7 is not implemented by Conduit.
1. Yes, at the time of writing this post I am recommending version 9, 1. Yes, at the time of writing this post I am recommending version 9,
while the aforementioned variable is {{ site.matrixLatestRoomVersion }}, while the aforementioned variable is {{ site.matrixLatestRoomVersion }},
as that is what Element encourages and features such as restricted rooms as that is what Element encourages and features such as restricted rooms
@ -73,7 +74,7 @@ you have three methods to promote your other accounts:
a git repository from which you can copy-paste it to all rooms, first `/devtools`, a git repository from which you can copy-paste it to all rooms, first `/devtools`,
then "room state", "m.room.power_levels", "edit" and you can paste your new then "room state", "m.room.power_levels", "edit" and you can paste your new
administrators there and press "send"! This is the only mass option you have, administrators there and press "send"! This is the only mass option you have,
and you will have to do this once every twenty rooms. and you will have to do this in each twenty rooms.
Remember you will have to do this every time you add a new moderator (or they Remember you will have to do this every time you add a new moderator (or they
will be unable to act in the room when they are needed)! will be unable to act in the room when they are needed)!
@ -96,6 +97,11 @@ you simply use `/devtools` and ban the entire server by sending a completely new
`m.room.server_acl`, luckily you are a professional `/devtools` user at this point `m.room.server_acl`, luckily you are a professional `/devtools` user at this point
so having to do this 20 times is nothing to you. so having to do this 20 times is nothing to you.
*2022-01-10 addition:* this becomes worse as Matrix Synapse alongside [the Matrix protocol itself will authorise everything done by servers that don't honour the `m.room.server_acl` event](https://github.com/matrix-org/matrix-doc/issues/3506)
so as per the guide, you will have to acl those servers too (or the ACL might as well not exist). Sadly at the time
of writing that also includes [Conduit, so all Conduits must be ACLed too](https://gitlab.com/famedly/conduit/-/issues/67),
even if they weren't malicious. A minor comfort is that [Conduit doesn't currently support room versions 7, 8 and 9](https://gitlab.com/famedly/conduit/-/issues/161).
### Icing on the cake ### Icing on the cake
Could this get any better? Yes, the abuse could happen when you are sleeping Could this get any better? Yes, the abuse could happen when you are sleeping