CVE-2021-27738: Improper Access Control to Streaming Coordinator & SSRF
All request mappings in StreamingCoordinatorController.java handling /kylin/api/streamingcoordinator/ REST API endpoints did not include any security checks, which allowed an unauthenticated user to issue arbitrary requests, such as assigning/unassigning of streaming cubes, creation/modification and deletion of replica sets, to the Kylin Coordinator. For endpoints accepting node details in HTTP message body, unauthenticated (but limited) server-side request forgery (SSRF) can be achieved. This issue affects Apache Kylin Apache Kylin 3 versions prior to 3.1.2.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-27738?
CVE-2021-27738 is a vulnerability in Apache Kylin that allows an unauthenticated user to issue arbitrary requests on the `/kylin/api/streaming_coordinator/*` REST API endpoints.
How does CVE-2021-27738 affect Apache Kylin?
CVE-2021-27738 affects Apache Kylin versions 3.0.0 through 3.1.2.
What is the severity of CVE-2021-27738?
The severity of CVE-2021-27738 is high, with a severity value of 7.5.
How can an unauthenticated user exploit CVE-2021-27738?
An unauthenticated user can exploit CVE-2021-27738 by issuing arbitrary requests on the affected `/kylin/api/streaming_coordinator/*` REST API endpoints.
Are there any references related to CVE-2021-27738?
Yes, you can find more information about CVE-2021-27738 at the following references: - [Link 1](http://www.openwall.com/lists/oss-security/2022/01/06/6) - [Link 2](https://lists.apache.org/thread/vkohh0to2vzwymyb2x13fszs3cs3vd70)