CVE-2019-16535 : What You Need to Know
Learn about CVE-2019-16535 affecting ClickHouse versions prior to 19.14, enabling RCE or DoS attacks through decompression algorithm flaws. Find mitigation steps and prevention measures.
ClickHouse versions prior to 19.14 are vulnerable to RCE or DoS attacks through the native protocol due to specific decompression algorithm issues.
Understanding CVE-2019-16535
ClickHouse versions before 19.14 are susceptible to remote code execution (RCE) or denial of service (DoS) attacks.
What is CVE-2019-16535?
In ClickHouse versions prior to 19.14, the presence of out-of-bounds read, out-of-bounds write, and integer underflow in the decompression algorithms allows attackers to execute RCE or DoS attacks via the native protocol.
The Impact of CVE-2019-16535
The vulnerability in ClickHouse versions before 19.14 can lead to severe consequences, including unauthorized remote code execution and service disruption.
Technical Details of CVE-2019-16535
ClickHouse's vulnerability to RCE or DoS attacks has specific technical aspects that need to be understood.
Vulnerability Description
The vulnerability arises from out-of-bounds read, out-of-bounds write, and integer underflow in the decompression algorithms of ClickHouse versions prior to 19.14.
Affected Systems and Versions
- Product: ClickHouse
- Vendor: n/a
- Versions Affected: All versions before 19.14
Exploitation Mechanism
Attackers can exploit the vulnerability through the native protocol to achieve RCE or DoS attacks in ClickHouse versions prior to 19.14.
Mitigation and Prevention
Protecting systems from CVE-2019-16535 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update ClickHouse to version 19.14 or newer to mitigate the vulnerability.
- Monitor network traffic for any suspicious activities that could indicate an ongoing attack.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement network segmentation and access controls to limit the attack surface.
- Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Stay informed about security advisories and updates from ClickHouse.
- Apply patches and updates as soon as they are released to ensure the system is protected against known vulnerabilities.