CVE-2021-31522

Apache Kylin unsafe class loading

Description

Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.

Remediation

Workaround:

  • Users of Kylin 2.x & Kylin 3.x should upgrade to 3.1.3 or apply patch https://github.com/apache/kylin/pull/1695. Users of Kylin 4.x should upgrade to 4.0.1 or apply patch https://github.com/apache/kylin/pull/1763.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.80% Top 10%
Vendor Advisory apache.org
Affected: Apache Software Foundation Apache Kylin
Published at:
Updated at:

References

Link Tags
https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw patch vendor advisory
http://www.openwall.com/lists/oss-security/2022/01/06/4 mailing list third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-31522?
CVE-2021-31522 has been scored as a critical severity vulnerability.
How to fix CVE-2021-31522?
As a workaround for remediating CVE-2021-31522: Users of Kylin 2.x & Kylin 3.x should upgrade to 3.1.3 or apply patch https://github.com/apache/kylin/pull/1695. Users of Kylin 4.x should upgrade to 4.0.1 or apply patch https://github.com/apache/kylin/pull/1763.
Is CVE-2021-31522 being actively exploited in the wild?
It is possible that CVE-2021-31522 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31522?
CVE-2021-31522 affects Apache Software Foundation Apache Kylin.
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