CVE-2020-13925

Vulnerability

Overview

CVE-2020-13925 is a command injection vulnerability in Apache Kylin, similar to CVE-2020-1956. A REST API endpoint concatenates user-supplied input directly into operating system commands without proper validation or sanitization [1][2]. This flaw allows an attacker to inject arbitrary OS commands that are then executed on the server.

Exploitation

The vulnerable REST API is remotely accessible, requiring only network connectivity to the Kylin server. No authentication or special privileges are mentioned in the advisories, suggesting that the endpoint may be exposed without access controls [1][2]. An attacker can craft a malicious request containing OS command syntax, which the API blindly incorporates into a system command.

Impact

Successful exploitation enables remote code execution as the Kylin server process. An attacker can execute arbitrary commands, potentially leading to full compromise of the server, data exfiltration, or lateral movement within the network.

Mitigation

The Apache Kylin project has addressed this vulnerability in version 3.1.0. Users running any version after 2.3 are advised to upgrade immediately [1][2]. No workarounds are documented; upgrading is the recommended course of action.