CVE-2020-1956: Apache Kylin OS Command Injection Vulnerability

Vulnerability summary

CVE-2020-1956 is a high (CVSS 9.0) OS Command Injection vulnerability in Apache Kylin. It is known to be exploited: CISA lists it, first on 25-03-2022. EPSS estimates a 97.34% chance of exploitation in the next 30 days, higher than 99.8% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 22-05-2020
   PublishedVulnerability first disclosed.
2. 25-03-2022
   Added to CISA KEVApache Kylin OS Command Injection Vulnerability
3. 15-04-2022
   CISA remediation dueApply updates per vendor instructions.
4. 21-10-2025
   Last modifiedVulnerability information updated.

Description

Apache Kylin 2.3.0, and releases up to 2.6.5 and 3.0.1 has some restful apis which will concatenate os command with the user input string, a user is likely to be able to execute any os command without any protection or validation.

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.