CVE-2023-45821 Incorrect Docker Hub registry check in Artifact Hub
Attackers can hijack Docker Hub credentials by spoofing a domain ending in docker.io, potentially exposing read-only public content access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-45821?
CVE-2023-45821 is a medium-severity vulnerability in artifacthub hub, published on 19 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Artifact Hub is a web-based application that enables finding, installing, and publishing packages and configurations for CNCF projects. During a security audit of Artifact Hub's code base a security researcher identified a bug in which the `registryIsDockerHub` function was only checking that the registry domain had the `docker.io` suffix. Artifact Hub allows providing some Docker credentials that are used to increase the rate limit applied when interacting with the Docker Hub registry API to read publicly available content. Due to the incorrect check described above, it'd be possible to hijack those credentials by purchasing a domain which ends with `docker.io` and deploying a fake OCI registry on it. <https://artifacthub.io/> uses some credentials that only have permissions to read public content available in the Docker Hub. However, even though credentials for private repositories (disabled on `artifacthub.io`) are handled in a different way, other Artifact Hub deployments could have been using them for a different purpose. This issue has been resolved in version `1.16.0`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-494
Which versions are affected by CVE-2023-45821?
3 open source packages ship an affected version, including github.com/artifacthub/hub. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/artifacthub/hub Go | All versions | 1.16.0 |
github.com/artifacthub/hub Go | All versions | 1.16.0 |
github.com/artifacthub/hub Go | All versions | 1.16.0 |
Products include Artifacthub Hub.
How do I fix CVE-2023-45821?
Upgrade github.com/artifacthub/hub to 1.16.0 or later.
Is CVE-2023-45821 being exploited?
There is no known exploitation of CVE-2023-45821 in the wild and no public exploit code.
Other vulnerabilities in artifacthub hub
Sources
Also known as GHSA-g6pq-x539-7w4j, GO-2023-2135.