CVE-2021-45456 Command injection

What is CVE-2021-45456?

CVE-2021-45456 is a critical command injection vulnerability in Apache Kylin, published on 6 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Apache kylin checks the legitimacy of the project before executing some commands with the project name passed in by the user. There is a mismatch between what is being checked and what is being used as the shell command argument in DiagnosisService. This may cause an illegal project name to pass the check and perform the following steps, resulting in a command injection vulnerability. This issue affects Apache Kylin 4.0.0.

Weakness: CWE-77

Which versions are affected by CVE-2021-45456?

2 open source packages ship an affected version, including org.apache.kylin:kylin. It affects 1 product.

Products include Apache Kylin.

How do I fix CVE-2021-45456?

Upgrade org.apache.kylin:kylin to 4.0.1 or later.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-45456 being exploited?

There is no known exploitation of CVE-2021-45456 in the wild and no public exploit code.

Other vulnerabilities in Apache Kylin

• CVE-2020-1956 Apache Kylin OS Command Injection Exploited High 8.8
• CVE-2026-62390 Apache Kylin: SQL Injection Vulnerability in Catalog Cache Refresh API Critical 9.8
• CVE-2022-44621 Apache Kylin: Command injection by Diagnosis Controller Critical 9.8
• CVE-2022-24697 Apache Kylin vulnerable to remote code execution Critical 9.8
• CVE-2021-31522 Apache Kylin unsafe class loading Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-hw3m-8h25-8frw.