#VU59277 Input validation error in Apache Kylin - CVE-2021-31522

Vulnerability identifier: #VU59277

Vulnerability risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-31522

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Kylin
Server applications / Database software

Vendor: Apache Foundation

Description

The vulnerability allows a remote user to compromise the affected application.

The vulnerability exists due to the application allows to load any class through Class.forName(...) call. A remote user can execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Kylin: 2.0.0, 2.1.0, 2.2.0, 2.3.0 - 2.3.2, 2.4.0 - 2.4.1, 2.5.0 - 2.5.2, 2.6.0 - 2.6.6, 3.0.0 - 3.0.2, 3.1.0 - 3.1.2, 4.0.0

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External links
https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw
https://www.openwall.com/lists/oss-security/2022/01/06/4

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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.