In the Druid ingestion system, the InputSource is used for reading data from a certain data source. However, the HTTP InputSource allows authenticated users to read data from other sources than intended, such as the local file system, with the privileges of the Druid server process. This is not an elevation of privilege when users access Druid directly, since Druid also provides the Local InputSource, which allows the same level of access. But it is problematic when users interact with Druid indirectly through an application that allows users to specify the HTTP InputSource, but not the Local InputSource. In this case, users could bypass the application-level restriction by passing a file URL to the HTTP InputSource. This issue was previously mentioned as being fixed in 0.21.0 as per CVE-2021-26920 but was not fixed in 0.21.0 or 0.21.1.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-9p5g-vg43-mj5r Druid ingestion system Authenticated users can read data from other sources than intended
Fixes

Solution

No solution given by the vendor.


Workaround

Users can avoid the issue by upgrading to 0.22.0 or a higher version. In an earlier version than 0.22.0, when the user application wants to restrict the access to the local file system, it should disallow all InputSources that can read local files, that is the Local, HTTP, and HDFS InputSources.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2024-08-04T01:01:59.216Z

Reserved: 2021-07-15T00:00:00

Link: CVE-2021-36749

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-09-24T10:15:07.257

Modified: 2024-11-21T06:14:00.913

Link: CVE-2021-36749

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-09-23T00:00:00Z

Links: CVE-2021-36749 - Bugzilla

cve-icon OpenCVE Enrichment

No data.