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Merge branch 'validate-attributed-to' into main

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Kitaiti Makoto 2020-12-19 06:01:45 +09:00
commit aa33c8e7d3
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4
CHANGELOG.md
View file

@ -59,6 +59,10 @@
- Don't show boosts and likes for "all" and "local" in timelines (#781)
- Fix liking and boosting posts on remote instances (#762)
### Security
- Validate spoofing of Create activity
## [0.4.0] - 2019-12-23
### Added

28
plume-common/src/activity_pub/inbox.rs
View file

@ -164,6 +164,11 @@ where
Some(x) => x,
None => return Inbox::NotHandled(ctx, act, InboxError::InvalidActor(None)),
};
if Self::is_spoofed_activity(&actor_id, &act) {
return Inbox::NotHandled(ctx, act, InboxError::InvalidObject(None));
}
// Transform this actor to a model (see FromId for details about the from_id function)
let actor = match A::from_id(
ctx,
@ -222,6 +227,29 @@ where
Inbox::Failed(err) => Err(err),
}
}
fn is_spoofed_activity(actor_id: &str, act: &serde_json::Value) -> bool {
use serde_json::Value::{Array, Object, String};
if act["type"] != String("Create".to_string()) {
return false;
}
let attributed_to = act["object"].get("attributedTo");
if attributed_to.is_none() {
return false;
}
let attributed_to = attributed_to.unwrap();
match attributed_to {
Array(v) => v.iter().all(|i| match i {
String(s) => s != actor_id,
Object(obj) => obj.get("id").map_or(true, |s| s != actor_id),
_ => false,
}),
String(s) => s != actor_id,
Object(obj) => obj.get("id").map_or(true, |s| s != actor_id),
_ => false,
}
}
}
/// Get the ActivityPub ID of a JSON value.

202
plume-models/src/inbox.rs
View file

@ -173,6 +173,97 @@ pub(crate) mod tests {
});
}
#[test]
fn spoof_comment() {
let r = rockets();
let conn = &*r.conn;
conn.test_transaction::<_, (), _>(|| {
let (posts, users, _) = fill_database(&r);
let act = json!({
"id": "https://plu.me/comment/1/activity",
"actor": users[0].ap_url,
"object": {
"type": "Note",
"id": "https://plu.me/comment/1",
"attributedTo": users[1].ap_url,
"inReplyTo": posts[0].ap_url,
"content": "Hello.",
"to": [plume_common::activity_pub::PUBLIC_VISIBILITY]
},
"type": "Create",
});
assert!(matches!(
super::inbox(&r, act.clone()),
Err(super::Error::Inbox(
box plume_common::activity_pub::inbox::InboxError::InvalidObject(_),
))
));
Ok(())
});
}
#[test]
fn spoof_comment_by_object_with_id() {
let r = rockets();
let conn = &*r.conn;
conn.test_transaction::<_, (), _>(|| {
let (posts, users, _) = fill_database(&r);
let act = json!({
"id": "https://plu.me/comment/1/activity",
"actor": users[0].ap_url,
"object": {
"type": "Note",
"id": "https://plu.me/comment/1",
"attributedTo": {
"id": users[1].ap_url
},
"inReplyTo": posts[0].ap_url,
"content": "Hello.",
"to": [plume_common::activity_pub::PUBLIC_VISIBILITY]
},
"type": "Create",
});
assert!(matches!(
super::inbox(&r, act.clone()),
Err(super::Error::Inbox(
box plume_common::activity_pub::inbox::InboxError::InvalidObject(_),
))
));
Ok(())
});
}
#[test]
fn spoof_comment_by_object_without_id() {
let r = rockets();
let conn = &*r.conn;
conn.test_transaction::<_, (), _>(|| {
let (posts, users, _) = fill_database(&r);
let act = json!({
"id": "https://plu.me/comment/1/activity",
"actor": users[0].ap_url,
"object": {
"type": "Note",
"id": "https://plu.me/comment/1",
"attributedTo": {},
"inReplyTo": posts[0].ap_url,
"content": "Hello.",
"to": [plume_common::activity_pub::PUBLIC_VISIBILITY]
},
"type": "Create",
});
assert!(matches!(
super::inbox(&r, act.clone()),
Err(super::Error::Inbox(
box plume_common::activity_pub::inbox::InboxError::InvalidObject(_),
))
));
Ok(())
});
}
#[test]
fn create_post() {
let r = rockets();
@ -214,6 +305,117 @@ pub(crate) mod tests {
});
}
#[test]
fn spoof_post() {
let r = rockets();
let conn = &*r.conn;
conn.test_transaction::<_, (), _>(|| {
let (_, users, blogs) = fill_database(&r);
let act = json!({
"id": "https://plu.me/comment/1/activity",
"actor": users[0].ap_url,
"object": {
"type": "Article",
"id": "https://plu.me/~/Blog/my-article",
"attributedTo": [users[1].ap_url, blogs[0].ap_url],
"content": "Hello.",
"name": "My Article",
"summary": "Bye.",
"source": {
"content": "Hello.",
"mediaType": "text/markdown"
},
"published": "2014-12-12T12:12:12Z",
"to": [plume_common::activity_pub::PUBLIC_VISIBILITY]
},
"type": "Create",
});
assert!(matches!(
super::inbox(&r, act.clone()),
Err(super::Error::Inbox(
box plume_common::activity_pub::inbox::InboxError::InvalidObject(_),
))
));
Ok(())
});
}
#[test]
fn spoof_post_by_object_with_id() {
let r = rockets();
let conn = &*r.conn;
conn.test_transaction::<_, (), _>(|| {
let (_, users, blogs) = fill_database(&r);
let act = json!({
"id": "https://plu.me/comment/1/activity",
"actor": users[0].ap_url,
"object": {
"type": "Article",
"id": "https://plu.me/~/Blog/my-article",
"attributedTo": [
{"id": users[1].ap_url},
blogs[0].ap_url
],
"content": "Hello.",
"name": "My Article",
"summary": "Bye.",
"source": {
"content": "Hello.",
"mediaType": "text/markdown"
},
"published": "2014-12-12T12:12:12Z",
"to": [plume_common::activity_pub::PUBLIC_VISIBILITY]
},
"type": "Create",
});
assert!(matches!(
super::inbox(&r, act.clone()),
Err(super::Error::Inbox(
box plume_common::activity_pub::inbox::InboxError::InvalidObject(_),
))
));
Ok(())
});
}
#[test]
fn spoof_post_by_object_without_id() {
let r = rockets();
let conn = &*r.conn;
conn.test_transaction::<_, (), _>(|| {
let (_, users, blogs) = fill_database(&r);
let act = json!({
"id": "https://plu.me/comment/1/activity",
"actor": users[0].ap_url,
"object": {
"type": "Article",
"id": "https://plu.me/~/Blog/my-article",
"attributedTo": [{}, blogs[0].ap_url],
"content": "Hello.",
"name": "My Article",
"summary": "Bye.",
"source": {
"content": "Hello.",
"mediaType": "text/markdown"
},
"published": "2014-12-12T12:12:12Z",
"to": [plume_common::activity_pub::PUBLIC_VISIBILITY]
},
"type": "Create",
});
assert!(matches!(
super::inbox(&r, act.clone()),
Err(super::Error::Inbox(
box plume_common::activity_pub::inbox::InboxError::InvalidObject(_),
))
));
Ok(())
});
}
#[test]
fn delete_comment() {
use crate::comments::*;

1
plume-models/src/lib.rs
View file

@ -1,6 +1,7 @@
#![feature(try_trait)]
#![feature(never_type)]
#![feature(proc_macro_hygiene)]
#![feature(box_patterns)]
#[macro_use]
extern crate diesel;