CVE-2021-26919

Apache Druid Authenticated users can execute arbitrary code from malicious MySQL database systems.

Description

Apache Druid allows users to read data from other database systems using JDBC. This functionality is to allow trusted users with the proper permissions to set up lookups or submit ingestion tasks. The MySQL JDBC driver supports certain properties, which, if left unmitigated, can allow an attacker to execute arbitrary code from a hacker-controlled malicious MySQL server within Druid server processes. This issue was addressed in Apache Druid 0.20.2

Remediation

Workaround:

Users should upgrade to Druid 0.20.2 and enable new Druid configurations to mitigate vulnerable MySQL JDBC properties. Whenever possible, network access to cluster machines should be restricted to trusted hosts only. Ensure that users have the minimum set of Druid permissions necessary, and are not granted access to functionality that they do not require.

8.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 75.97% Top 5%

Vendor Advisory apache.org

Affected: Apache Software Foundation Apache Druid

References

Link	Tags
https://lists.apache.org/thread.html/rd87451fce34df54796e66321c40d743a68fb4553d72e7f6f0bc62ebd%40%3Cdev.druid.apache.org%3E	vendor advisory mailing list
https://lists.apache.org/thread.html/r443e2916c612fbd119839c0fc0729327d6031913a75081adac5b43ad%40%3Cdev.druid.apache.org%3E	mailing list
https://lists.apache.org/thread.html/re4c5deb0aae4bace69844d15c9fd1699e907ebfee93bc3926474d110%40%3Cdev.druid.apache.org%3E	mailing list
https://lists.apache.org/thread.html/re0910cf4c784897774427fecd95912fb565a6bd06d924a55e70bbbfc%40%3Ccommits.druid.apache.org%3E	mailing list
https://lists.apache.org/thread.html/ra85fa7d31f9bec1148ffd2e4030934927caa8bff89bca9f61f75e697%40%3Cdev.druid.apache.org%3E	mailing list
https://lists.apache.org/thread.html/r470f8c92eb5df45f41b3ae609b6315b6c5ff51b3ceb2f09f00ca620f%40%3Cdev.druid.apache.org%3E	mailing list
https://lists.apache.org/thread.html/r7a531ec123570cb7875ff991cf115f99e9ef99a48b3cf3fa4f9d9864%40%3Ccommits.druid.apache.org%3E	mailing list
https://lists.apache.org/thread.html/r6bc68264170046448f823d12c17fd1fd875251d97d60869f58709872%40%3Ccommits.druid.apache.org%3E	mailing list
https://lists.apache.org/thread.html/rf3ea2a4018e87e6c45d36cf8479af7727dcc276edabd2f7cf59e0c5f%40%3Cdev.druid.apache.org%3E	mailing list

Frequently Asked Questions

What is the severity of CVE-2021-26919?: CVE-2021-26919 has been scored as a high severity vulnerability.
How to fix CVE-2021-26919?: As a workaround for remediating CVE-2021-26919: Users should upgrade to Druid 0.20.2 and enable new Druid configurations to mitigate vulnerable MySQL JDBC properties. Whenever possible, network access to cluster machines should be restricted to trusted hosts only. Ensure that users have the minimum set of Druid permissions necessary, and are not granted access to functionality that they do not require.
Is CVE-2021-26919 being actively exploited in the wild?: It is possible that CVE-2021-26919 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~76% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-26919?: CVE-2021-26919 affects Apache Software Foundation Apache Druid.