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Date: Fri, 29 Jan 2021 09:57:45 -0800
From: Jihoon Son <jihoonson@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2021-25646: Authenticated users can override system
configurations in their requests which allows them to execute arbitrary code.
Description:
Apache Druid includes the ability to execute user-provided JavaScript
code embedded in various types of requests. This functionality is
intended for use in high-trust environments, and is disabled by
default. However, in Druid 0.20.0 and earlier, it is possible for an
authenticated user to send a specially-crafted request that forces
Druid to run user-provided JavaScript code for that request,
regardless of server configuration. This can be leveraged to execute
code on the target machine with the privileges of the Druid server
process.
Mitigation:
Users should upgrade to Druid 0.20.1. Whenever possible, network
access to cluster machines should be restricted to trusted hosts only.
Credit:
This issue was discovered by Litch1 from the Security Team of Alibaba Cloud.
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