CVE-2018-14669 : Exploit Details and Defense Strategies
Learn about CVE-2018-14669, a vulnerability in ClickHouse MySQL client versions prior to 1.1.54390 that allows a malicious MySQL database to access files on the server. Find mitigation steps and prevention measures here.
ClickHouse MySQL client versions prior to 1.1.54390 had a vulnerability that allowed a malicious MySQL database to read arbitrary files from the connected ClickHouse server.
Understanding CVE-2018-14669
This CVE involves a Local File Disclosure vulnerability in ClickHouse MySQL client.
What is CVE-2018-14669?
The affected versions of ClickHouse MySQL client, specifically those before version 1.1.54390, had a feature enabled called "LOAD DATA LOCAL INFILE" that could be exploited by a malicious MySQL database to access and retrieve any desired files from the connected ClickHouse server.
The Impact of CVE-2018-14669
This vulnerability could lead to unauthorized access to sensitive files on the server, potentially exposing critical information to malicious actors.
Technical Details of CVE-2018-14669
ClickHouse MySQL client versions prior to 1.1.54390 are susceptible to a Local File Disclosure vulnerability.
Vulnerability Description
The vulnerable versions had the "LOAD DATA LOCAL INFILE" functionality enabled, allowing unauthorized access to files on the server.
Affected Systems and Versions
- Product: ClickHouse
- Vendor: n/a
- Versions Affected: All versions prior to 1.1.54390
Exploitation Mechanism
The vulnerability could be exploited by a malicious MySQL database to read arbitrary files from the connected ClickHouse server.
Mitigation and Prevention
To address CVE-2018-14669, immediate steps and long-term security practices are recommended.
Immediate Steps to Take
- Disable the "LOAD DATA LOCAL INFILE" feature in ClickHouse MySQL client.
- Monitor and restrict access to sensitive files on the server.
Long-Term Security Practices
- Regularly update ClickHouse to the latest version to patch known vulnerabilities.
- Implement network segmentation to limit access to critical servers and files.
- Conduct regular security audits to identify and address potential vulnerabilities.
Patching and Updates
Ensure that ClickHouse MySQL client is updated to version 1.1.54390 or newer to mitigate the Local File Disclosure vulnerability.