CVE-2018-1284 : Exploit Details and Defense Strategies

Apache Hive versions 0.6.0 to 2.3.2 are vulnerable to XML Injection, allowing malicious users to exploit certain xpath UDFs to access files on the machine hosting HiveServer2.

Understanding CVE-2018-1284

This CVE involves a security vulnerability in Apache Hive versions 0.6.0 to 2.3.2 that could be exploited by attackers to access files on the server.

What is CVE-2018-1284?

If the setting "hive.server2.enable.doAs" is disabled, malicious users can use specific xpath UDFs to reveal file contents on the server.

The Impact of CVE-2018-1284

This vulnerability allows unauthorized users to potentially access sensitive files owned by the HiveServer2 user, typically named "hive."

Technical Details of CVE-2018-1284

Apache Hive versions 0.6.0 to 2.3.2 are susceptible to XML Injection through xpath UDFs, enabling unauthorized file access.

Vulnerability Description

The issue arises when the "hive.server2.enable.doAs" setting is set to "false," allowing attackers to exploit xpath UDFs to access files on the server.

Affected Systems and Versions

Product: Apache Hive
Vendor: Apache Software Foundation
Versions: 0.6.0 to 2.3.2

Exploitation Mechanism

Malicious users can leverage xpath UDFs to reveal the contents of files on the machine running HiveServer2.

Mitigation and Prevention

To address CVE-2018-1284, follow these steps:

Immediate Steps to Take

Enable the "hive.server2.enable.doAs" setting to prevent unauthorized file access.
Regularly monitor and audit file access permissions.

Long-Term Security Practices

Implement least privilege access controls to restrict file access.
Conduct regular security assessments and penetration testing.

Patching and Updates

Apply patches or updates provided by Apache Software Foundation to fix the vulnerability.