CVE-2019-2743 : Security Advisory and Response
Learn about CVE-2019-2743, a vulnerability in Oracle MySQL Server that allows unauthorized access, potentially leading to a complete Denial of Service. Find out the impacted versions and mitigation steps.
A vulnerability has been identified in the MySQL Server component of Oracle MySQL, affecting versions 8.0.12 and earlier, potentially leading to a Denial of Service attack.
Understanding CVE-2019-2743
This CVE pertains to a security vulnerability in the MySQL Server component of Oracle MySQL, specifically in the Server: Security: Roles subcomponent.
What is CVE-2019-2743?
The vulnerability allows a low-privileged attacker with network access through multiple protocols to compromise the MySQL Server. Successful exploitation can result in a complete Denial of Service (DoS) by causing the server to hang or crash repeatedly.
The Impact of CVE-2019-2743
- CVSS 3.0 Base Score: 5.3 (Availability impacts)
- CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)
Technical Details of CVE-2019-2743
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability in the MySQL Server component of Oracle MySQL allows unauthorized access to compromise the server, potentially leading to a complete DoS situation.
Affected Systems and Versions
- Product: MySQL Server
- Vendor: Oracle Corporation
- Affected Versions: 8.0.12 and prior
Exploitation Mechanism
The vulnerability can be exploited by a low-privileged attacker with network access through various protocols, enabling them to compromise the MySQL Server.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Apply security patches provided by Oracle Corporation promptly.
- Restrict network access to the MySQL Server to trusted entities only.
- Monitor server logs for any suspicious activities.
Long-Term Security Practices
- Regularly update and patch the MySQL Server to mitigate potential vulnerabilities.
- Implement network segmentation to limit access to critical servers.
- Conduct regular security audits and penetration testing to identify and address any security gaps.
Patching and Updates
Ensure that the MySQL Server is updated with the latest security patches and versions to prevent exploitation of known vulnerabilities.