CVE-2023-25558 Information

Description

DataHub is an open-source metadata platform. When the DataHub frontend is configured to authenticate via SSO it will leverage the pac4j library. The processing of the id_token is done in an unsafe manner which is not properly accounted for by the DataHub frontend. Specifically if any of the id_token claims value start with the sb64 prefix pac4j considers the value to be a serialized Java object and will deserialize it. This issue may lead to Remote Code Execution (RCE) in the worst case. Although a RestrictedObjectInputStream is in place that puts some restriction on what classes can be deserialized it still allows a broad range of java packages and potentially exploitable with different gadget chains. Users are advised to upgrade. There are no known workarounds. This vulnerability was discovered and reported by the GitHub Security lab and is tracked as GHSL-2022-086.

Reference

https://github.com/datahub-project/datahub/security/advisories/GHSA-hrwp-2q5c-86wv https://github.com/datahub-project/datahub/commit/2a182f484677d056730d6b4e9f0143e67368359f