Bug 1979684 (CVE-2021-26920)

Summary: CVE-2021-26920 druid: HTTP InputSource allows authenticated users to read data from other sources
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aos-bugs, bmontgom, eparis, jburrell, jokerman, nstielau, sd-operator-metering, sponnaga, tflannag
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: druid 0.21.0 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in druid. 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. The highest threat from this vulnerability is to data confidentiality.
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Clone Of: Environment:
Last Closed: 2021-07-13 21:55:00 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1979687    

Description Guilherme de Almeida Suckevicz 2021-07-06 17:47:26 UTC 
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.

References:
http://www.openwall.com/lists/oss-security/2021/07/02/1
https://lists.apache.org/thread.html/r61aab724cf97d80da7f02d50e9af6de5c7c40dd92dab7518746fbaa2@%3Cannounce.apache.org%3E
Comment 1 Hardik Vyas 2021-07-12 11:44:50 UTC 
Upstream fix:
https://github.com/apache/druid/commit/9946306d4b2c16a7fc8bac97c9f4815ed4b46570
Comment 2 Product Security DevOps Team 2021-07-13 21:55:00 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-26920