#VU54554 Security restrictions bypass in Apache Druid - CVE-2021-26920

Vulnerability identifier: #VU54554

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-26920

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Druid
Server applications / Database software

Vendor: Apache Foundation

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to a design error in the HTTP InputSource method, which allows a remote authenticated user to view contents of local files on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Druid: 0.1.0 - 0.20.2

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External links
https://lists.apache.org/thread.html/r29e45561343cc5cf7d3290ee0b0e94e565faab19c20d022df9b5e29c%40%3Cdev.druid.apache.org%3E
https://www.openwall.com/lists/oss-security/2021/07/02/1

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.