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Ignore anonymous in oauth2 read allow access (#3336)

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Administrators will sometimes configure oauth2 clients with `idm_all_accounts`
as an allowed scope group. Despite anonymous being *unable* to interact with
oauth2, this still allowed oauth2 clients to be read by anonymous in this
configuration. For some users, this may be considered a public info
disclosure.
This commit is contained in:
Firstyear 2025-01-04 13:09:48 +10:00 committed by GitHub
parent 5562625d75
commit 3430a1c31d
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2 changed files with 22 additions and 5 deletions
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22
server/lib/src/server/access/mod.rs
View file

@ -2964,6 +2964,7 @@ mod tests {
let r_set = vec![Arc::new(ev1.clone()), Arc::new(ev2)];
// Check the authorisation search event, and that it reduces correctly.
let se_a = SearchEvent::new_impersonate_entry(
E_TEST_ACCOUNT_1.clone(),
filter_all!(f_pres(Attribute::Name)),
@ -2971,17 +2972,28 @@ mod tests {
let ex_a = vec![Arc::new(ev1)];
let ex_a_reduced = vec![ev1_reduced];
test_acp_search!(&se_a, vec![], r_set.clone(), ex_a);
test_acp_search_reduce!(&se_a, vec![], r_set.clone(), ex_a_reduced);
// Check that anonymous is denied even though it's a member of the group.
let anon: EntryInitNew = BUILTIN_ACCOUNT_ANONYMOUS_DL6.clone().into();
let mut anon = anon.into_invalid_new();
anon.set_ava_set(&Attribute::MemberOf, ValueSetRefer::new(UUID_TEST_GROUP_1));
let anon = Arc::new(anon.into_sealed_committed());
let se_anon =
SearchEvent::new_impersonate_entry(anon, filter_all!(f_pres(Attribute::Name)));
let ex_anon = vec![];
test_acp_search!(&se_anon, vec![], r_set.clone(), ex_anon);
// Check the deny case.
let se_b = SearchEvent::new_impersonate_entry(
E_TEST_ACCOUNT_2.clone(),
filter_all!(f_pres(Attribute::Name)),
);
let ex_b = vec![];
// Check the authorisation search event, and that it reduces correctly.
test_acp_search!(&se_a, vec![], r_set.clone(), ex_a);
test_acp_search_reduce!(&se_a, vec![], r_set.clone(), ex_a_reduced);
// Check the deny case.
test_acp_search!(&se_b, vec![], r_set, ex_b);
}

5
server/lib/src/server/access/search.rs
View file

@ -168,6 +168,11 @@ fn search_oauth2_filter_entry(ident: &Identity, entry: &Arc<EntrySealedCommitted
match &ident.origin {
IdentType::Internal | IdentType::Synch(_) => AccessResult::Ignore,
IdentType::User(iuser) => {
if iuser.entry.get_uuid() == UUID_ANONYMOUS {
debug!("Anonymous can't access OAuth2 entries, ignoring");
return AccessResult::Ignore;
}
let contains_o2_rs = entry
.get_ava_as_iutf8(Attribute::Class)
.map(|set| {