CVE-2019-2755 : What You Need to Know
Learn about CVE-2019-2755, a vulnerability in Oracle MySQL Server that allows attackers to compromise the server, potentially leading to a denial of service. Find out how to mitigate and prevent this issue.
A vulnerability in the Server component of Oracle MySQL, affecting versions 5.7.25 and earlier, as well as version 8.0.15 and earlier, has been identified. This vulnerability can be exploited by an attacker with high privileges and network access, potentially leading to a denial of service for the MySQL Server.
Understanding CVE-2019-2755
This CVE pertains to a vulnerability in the Replication feature of Oracle MySQL.
What is CVE-2019-2755?
The vulnerability in the MySQL Server component of Oracle MySQL allows a high privileged attacker with network access to compromise the server. Successful exploitation can result in unauthorized actions causing repeated crashes or hangs, leading to a denial of service.
The Impact of CVE-2019-2755
The vulnerability has a CVSS 3.0 Base Score of 4.9, with availability impacts being the main concern. An attacker with network access and high privileges can exploit this vulnerability to compromise the MySQL Server.
Technical Details of CVE-2019-2755
This section provides technical details of the vulnerability.
Vulnerability Description
The vulnerability in the Replication feature of Oracle MySQL allows attackers with high privileges and network access to compromise the server, potentially leading to a denial of service.
Affected Systems and Versions
- Product: MySQL Server
- Vendor: Oracle Corporation
- Versions Affected: 5.7.25 and prior, 8.0.15 and prior
Exploitation Mechanism
- Attacker with high privileges and network access can exploit the vulnerability through multiple protocols
- Successful exploitation can lead to unauthorized actions causing repeated crashes or hangs
Mitigation and Prevention
Protecting systems from CVE-2019-2755 requires immediate steps and long-term security practices.
Immediate Steps to Take
- Apply vendor patches and updates promptly
- Monitor network traffic for any suspicious activity
- Restrict network access to the MySQL Server
Long-Term Security Practices
- Regularly update and patch MySQL Server and related software
- Implement the principle of least privilege to limit access
- Conduct regular security assessments and audits
Patching and Updates
- Oracle and other vendors have released patches to address this vulnerability
- Regularly check for updates and apply them to ensure system security