Objects API: Cross-object-type authorization bypass on the object history-detail endpoint

open-object · Authorization bypass via user key · CWE-639

Affectedopen-object

FixNo fix listed yet.

PublishedOct 28, 22:40 · GitHub_M

ScoredOct 28 · 6.5 · GitHub_M

Exploit code publicNone known · checked 21:18 UTC

ExploitedNone known · CISA KEV checked 22:06 UTC

What we know

No known exploitation. CISA KEV, checked 22:06 UTC.

No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.

An attacker needs network access and an account. CVSS: network, low privileges.

A successful attack can read data. CVSS impact.

Description

Open Object provides an API and admin interface to manage objects and object types. From 2.4.3 until 2.5.1, 3.6.2, 4.0.2, and 4.1.1, a token scoped to read one ObjectType can read the full versioned record of an object of any other ObjectType via the history-detail endpoint `GET /api/v2/objects/{uuid}/{index}`. The `history_detail` action in `src/objects/api/v2/views.py` calls `self.get_queryset()` and `get_object_or_404` directly instead of `self.get_object()`, so `check_object_permissions` and the per-object check in `ObjectTypeBasedPermission.has_object_permission` are not invoked. The queryset's `filter_for_token` applies only to the list and search actions, while `ObjectTypeBasedPermission.has_permission` allows non-create actions, leaving neither check to constrain history-detail records to the token's permitted ObjectType. The normal retrieve endpoint returns 403 for the same unauthorized object, and the sibling history action enforces the grant. Any valid non-superuser API token with a read grant on at least one ObjectType can therefore disclose another ObjectType's complete versioned object `data`, which can include citizen or case records and sensitive identifiers in government deployments. This issue is fixed in versions 2.5.1, 3.6.2, 4.0.2, and 4.1.1.

From GitHub_M

Affected and fixed versions

ProductAffectedFixed inopen-object>= 2.4.3, < 2.5.1–open-object>= 3.0.0, < 3.6.2–open-object>= 4.0.0-rc.1, < 4.0.2–open-object>= 4.1.0, < 4.1.1–

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References