Learn about CVE-2018-2776, a vulnerability in Oracle MySQL Server's Group Replication GCS component. This flaw affects versions 5.7.21 and earlier, allowing attackers to compromise the server and cause denial of service (DOS).
A security flaw in the Oracle MySQL Server's Group Replication GCS component has been identified, affecting versions 5.7.21 and earlier. This vulnerability can be exploited by a highly privileged attacker with network access, potentially leading to a denial of service (DOS) by compromising the MySQL Server.
Understanding CVE-2018-2776
This CVE involves a vulnerability in the MySQL Server component of Oracle MySQL, specifically in the Group Replication GCS. The flaw impacts versions 5.7.21 and prior, allowing unauthorized actions that can cause system hang or crashes, resulting in a complete DOS for the MySQL Server.
What is CVE-2018-2776?
The vulnerability in the Oracle MySQL Server's Group Replication GCS component allows a highly privileged attacker with network access via XCom to compromise the MySQL Server. Successful exploitation can lead to unauthorized actions causing system hang or frequent crashes, resulting in a complete denial of service (DOS) for the MySQL Server.
The Impact of CVE-2018-2776
The vulnerability has a Base Score of 4.9 according to the CVSS 3.0 scoring system, primarily affecting the availability of the system. If exploited, it can lead to unauthorized actions causing system hang or frequent crashes, resulting in a complete denial of service (DOS) for the MySQL Server.
Technical Details of CVE-2018-2776
This section provides detailed technical information about the CVE.
Vulnerability Description
The vulnerability allows a highly privileged attacker with network access via XCom to compromise the MySQL Server, potentially leading to a denial of service (DOS) by causing system hang or frequent crashes.
Affected Systems and Versions
Exploitation Mechanism
The vulnerability can be exploited by a highly privileged attacker with network access via XCom, allowing them to compromise the MySQL Server and potentially cause a denial of service (DOS) by triggering system hang or frequent crashes.
Mitigation and Prevention
Protecting systems from CVE-2018-2776 requires immediate actions and long-term security practices.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates
Ensure that the MySQL Server is updated with the latest security patches and fixes provided by Oracle Corporation to mitigate the vulnerability effectively.