CVE-2021-2201 is a vulnerability in the MySQL Server product of Oracle MySQL, specifically within the component: Server: Partition. The affected versions are 8.0.23 and prior. This vulnerability allows high privileged attackers with network access via multiple protocols to compromise the MySQL Server. Successful exploitation can lead to unauthorized actions that can cause a hang or a frequently repeatable crash, resulting in a complete denial of service (DoS). The CVSS 3.1 Base Score is 4.9, indicating medium severity with a significant impact on availability.
Organizations leveraging Oracle MySQL should understand the risk associated with this vulnerability. It is critical to address it promptly, as attackers can easily exploit this flaw with low complexity and high privileges. The risk to organizations includes potential service disruptions that could affect business operations, highlighting the urgency for defenders to prioritize patching immediately.
The vulnerability was published on April 22, 2021, and has been classified as modified since then. As of now, there are no known public exploits confirmed for this vulnerability, and it is not included in the Known Exploited Vulnerabilities (KEV) catalog. However, organizations should remain vigilant and implement mitigation strategies to prevent any unauthorized access.
With the potential for this vulnerability to impact availability significantly, organizations should consider scheduling remediation as part of their priority patch cycle. The CVSS vector indicates that the attack vector is network-based, with a low attack complexity, and no user interaction is required.
To safeguard against this vulnerability, organizations should stay updated with the latest security advisories and apply the necessary patches provided by Oracle.
Vulnerability Details
The vulnerability allows high privileged attackers with network access to compromise MySQL Server, leading to unauthorized ability to cause a hang or crash of the MySQL Server. The CVSS 3.1 Base Score of 4.9 indicates a medium severity level with a high impact on availability. The affected product is Oracle MySQL, specifically the Server component.
Technical Analysis
The root cause of this vulnerability stems from improper handling of certain partition functions within MySQL Server. Attackers can exploit this vulnerability remotely, utilizing network access to trigger a DoS condition. The attack complexity is classified as low, meaning that it does not require sophisticated techniques, and privileges required are high, indicating that a successful attack necessitates elevated access to the MySQL Server.
No user interaction is necessary for the exploitation of this vulnerability, further escalating its risk. In terms of impact, the availability impact is rated high, while confidentiality and integrity impacts remain unaffected, reflecting that the primary concern is the service disruption rather than data compromise.
Risk & Impact Analysis
Organizations running affected versions of Oracle MySQL face considerable risks, primarily due to the potential for service disruptions. The ease of exploitability makes this vulnerability a critical concern. The blast radius could extend beyond the immediate MySQL Server, potentially impacting other connected services and applications reliant on database availability. Given the CVSS score and the lack of current exploitation data, organizations should assess their exposure and prioritize remediation efforts.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The specific versions affected by this vulnerability are all versions of Oracle MySQL prior to 8.0.24. Organizations should ensure that they update to the latest version to mitigate this risk.
Mitigation & Remediation
Organizations should apply the latest patches provided by Oracle, specifically targeting the MySQL Server component. For those unable to apply updates immediately, temporary workarounds should be implemented, such as restricting network access to MySQL servers or employing additional firewalls. Continuous monitoring and security assessments, including regular penetration testing practices, can help identify similar vulnerabilities and ensure robust security.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should implement logging for access attempts to the MySQL server, monitor for unusual spikes in traffic, and analyze system performance metrics for sudden drops or crashes. Behavioral anomalies in database usage patterns should also be scrutinized to identify any unauthorized access or exploit attempts.
AppSecure Threat Intelligence Insight
CVE-2021-2201 exemplifies the importance of robust security measures in database management systems. The accessibility of this vulnerability highlights the need for continuous security assessments and adherence to best practices in security hygiene. Organizations are encouraged to maintain an active vulnerability management program to stay ahead of potential threats. Additionally, understanding the patterns of vulnerabilities like CVE-2021-2201 can inform strategic defensive planning.
Organizations should take this opportunity to review their overall security posture and ensure they are prepared to respond effectively to similar vulnerabilities in the future. By fostering a culture of security awareness and implementing proactive measures, organizations can significantly reduce their risk exposure.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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