CVE-2019-18657 : Vulnerability Insights and Analysis
Learn about CVE-2019-18657, a vulnerability in ClickHouse allowing HTTP header injection before version 19.13.5.44. Find out the impact, affected systems, exploitation, and mitigation steps.
ClickHouse before version 19.13.5.44 allows HTTP header injection through the url table function.
Understanding CVE-2019-18657
ClickHouse is vulnerable to HTTP header injection before version 19.13.5.44.
What is CVE-2019-18657?
This CVE refers to the ability to perform HTTP header injection via the url table function in ClickHouse versions prior to 19.13.5.44.
The Impact of CVE-2019-18657
The vulnerability allows malicious actors to inject HTTP headers, potentially leading to various attacks such as cross-site scripting (XSS) or data exfiltration.
Technical Details of CVE-2019-18657
ClickHouse vulnerability details and affected systems.
Vulnerability Description
HTTP header injection is permitted by ClickHouse through the url table function in versions before 19.13.5.44.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by injecting malicious HTTP headers through the url table function in vulnerable ClickHouse versions.
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2019-18657.
Immediate Steps to Take
- Upgrade ClickHouse to version 19.13.5.44 or newer to patch the vulnerability.
- Monitor and filter user input to prevent malicious HTTP header injections.
Long-Term Security Practices
- Regularly update and patch software to address security vulnerabilities.
- Conduct security audits and penetration testing to identify and mitigate potential risks.
Patching and Updates
- Stay informed about security updates and patches released by ClickHouse.