CVE-2023-45822 Unsafe rego built-in allowed in Artifact Hub
Attackers can exploit unsafe Rego policies to perform Server-Side Request Forgery, accessing internal resources and exfiltrating data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-45822?
CVE-2023-45822 is a low-severity server-side request forgery vulnerability in artifacthub hub, published on 19 Oct 2023. An attacker can exploit it over the internet without logging in, 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 a default unsafe rego built-in was allowed to be used when defining authorization policies. Artifact Hub includes a fine-grained authorization mechanism that allows organizations to define what actions can be performed by their members. It is based on customizable authorization policies that are enforced by the `Open Policy Agent`. Policies are written using `rego` and their data files are expected to be json documents. By default, `rego` allows policies to make HTTP requests, which can be abused to send requests to internal resources and forward the responses to an external entity. In the context of Artifact Hub, this capability should have been disabled. 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-918
Which versions are affected by CVE-2023-45822?
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-2023-45822?
Upgrade github.com/artifacthub/hub to 1.16.0 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2023-45822 being exploited?
There is no known exploitation of CVE-2023-45822 in the wild and no public exploit code.
Other vulnerabilities in artifacthub hub
Sources
Also known as GHSA-9pc8-m4vp-ggvf, GO-2023-2134.