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priv checks: use priv_to_priv_names and include path

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where appropriate. these should never leak anything sensitive, as we
check privs before checking existence or existence is already known at
that point via other privileges.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
This commit is contained in:
Fabian Grünbichler 2022-05-24 11:00:27 +02:00 committed by Thomas Lamprecht
parent efa62d44d4
commit 7d0dbaa013
2 changed files with 23 additions and 14 deletions
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24
src/api2/admin/datastore.rs
View File

@ -32,14 +32,14 @@ use pxar::accessor::aio::Accessor;
use pxar::EntryKind;
use pbs_api_types::{
print_ns_and_snapshot, Authid, BackupContent, BackupNamespace, BackupType, Counts, CryptMode,
DataStoreListItem, DataStoreStatus, DatastoreWithNamespace, GarbageCollectionStatus,
GroupListItem, Operation, PruneOptions, RRDMode, RRDTimeFrame, SnapshotListItem,
SnapshotVerifyState, BACKUP_ARCHIVE_NAME_SCHEMA, BACKUP_ID_SCHEMA, BACKUP_NAMESPACE_SCHEMA,
BACKUP_TIME_SCHEMA, BACKUP_TYPE_SCHEMA, DATASTORE_SCHEMA, IGNORE_VERIFIED_BACKUPS_SCHEMA,
MAX_NAMESPACE_DEPTH, NS_MAX_DEPTH_SCHEMA, PRIV_DATASTORE_AUDIT, PRIV_DATASTORE_BACKUP,
PRIV_DATASTORE_MODIFY, PRIV_DATASTORE_PRUNE, PRIV_DATASTORE_READ, PRIV_DATASTORE_VERIFY,
UPID_SCHEMA, VERIFICATION_OUTDATED_AFTER_SCHEMA,
print_ns_and_snapshot, privs_to_priv_names, Authid, BackupContent, BackupNamespace, BackupType,
Counts, CryptMode, DataStoreListItem, DataStoreStatus, DatastoreWithNamespace,
GarbageCollectionStatus, GroupListItem, Operation, PruneOptions, RRDMode, RRDTimeFrame,
SnapshotListItem, SnapshotVerifyState, BACKUP_ARCHIVE_NAME_SCHEMA, BACKUP_ID_SCHEMA,
BACKUP_NAMESPACE_SCHEMA, BACKUP_TIME_SCHEMA, BACKUP_TYPE_SCHEMA, DATASTORE_SCHEMA,
IGNORE_VERIFIED_BACKUPS_SCHEMA, MAX_NAMESPACE_DEPTH, NS_MAX_DEPTH_SCHEMA, PRIV_DATASTORE_AUDIT,
PRIV_DATASTORE_BACKUP, PRIV_DATASTORE_MODIFY, PRIV_DATASTORE_PRUNE, PRIV_DATASTORE_READ,
PRIV_DATASTORE_VERIFY, UPID_SCHEMA, VERIFICATION_OUTDATED_AFTER_SCHEMA,
};
use pbs_client::pxar::{create_tar, create_zip};
use pbs_config::CachedUserInfo;
@ -110,7 +110,13 @@ fn check_ns_privs(
return Ok(true);
}
proxmox_router::http_bail!(FORBIDDEN, "permission check failed");
let priv_names = privs_to_priv_names(full_access_privs | partial_access_privs).join("|");
let path = format!("/{}", store_with_ns.acl_path().join("/"));
proxmox_router::http_bail!(
FORBIDDEN,
"permission check failed - missing {priv_names} on {path}"
);
}
// helper to unify common sequence of checks:

13
src/server/pull.rs
View File

@ -16,9 +16,9 @@ use proxmox_router::HttpError;
use proxmox_sys::task_log;
use pbs_api_types::{
Authid, BackupNamespace, DatastoreWithNamespace, GroupFilter, GroupListItem, NamespaceListItem,
Operation, RateLimitConfig, Remote, SnapshotListItem, MAX_NAMESPACE_DEPTH,
PRIV_DATASTORE_AUDIT, PRIV_DATASTORE_BACKUP, PRIV_DATASTORE_MODIFY,
privs_to_priv_names, Authid, BackupNamespace, DatastoreWithNamespace, GroupFilter,
GroupListItem, NamespaceListItem, Operation, RateLimitConfig, Remote, SnapshotListItem,
MAX_NAMESPACE_DEPTH, PRIV_DATASTORE_AUDIT, PRIV_DATASTORE_BACKUP, PRIV_DATASTORE_MODIFY,
};
use pbs_client::{
@ -800,10 +800,13 @@ fn check_ns_privs(
// TODO re-sync with API, maybe find common place?
let user_privs = user_info.lookup_privs(owner, &store_with_ns.acl_path());
let path = &store_with_ns.acl_path();
let user_privs = user_info.lookup_privs(owner, path);
if (user_privs & privs) == 0 {
bail!("no permission to modify parent/datastore.");
let priv_names = privs_to_priv_names(privs).join("|");
let path = path.join("/");
bail!("privilege(s) {priv_names} missing on /{path}");
}
Ok(())
}