CVE-2024-38361 Permissions processing error in spacedb

Low 3.7 Published Updated

SpiceDB may incorrectly deny access to resources in multiple folders, causing legitimate users to lose permissions unexpectedly.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2024-38361?

CVE-2024-38361 is a low-severity missing authorization vulnerability in authzed spicedb, published on 20 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Spicedb is an Open Source, Google Zanzibar-inspired permissions database to enable fine-grained authorization for customer applications. Use of an exclusion under an arrow that has multiple resources may resolve to `NO_PERMISSION` when permission is expected. If the resource exists under *multiple* folders and the user has access to view more than a single folder, SpiceDB may report the user does not have access due to a failure in the exclusion dispatcher to request that *all* the folders in which the user is a member be returned. Permission is returned as `NO_PERMISSION` when `PERMISSION` is expected on the `CheckPermission` API. This issue has been addressed in version 1.33.1. All users are advised to upgrade. There are no known workarounds for this issue.

Weakness: CWE-281

Which versions are affected by CVE-2024-38361?

3 open source packages ship an affected version, including github.com/authzed/spicedb. It affects 1 product.

PackageAffectedFixed in
github.com/authzed/spicedb GoAll versions1.33.1
github.com/authzed/spicedb GoAll versions1.33.1
github.com/authzed/spicedb GoAll versions1.33.1

Products include Authzed Spicedb.

How do I fix CVE-2024-38361?

Upgrade github.com/authzed/spicedb to 1.33.1 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2024-38361 being exploited?

There is no known exploitation of CVE-2024-38361 in the wild and no public exploit code.

Sources

Also known as GHSA-grjv-gjgr-66g2, GO-2024-2939.

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