CVE-2023-21899 is a vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization. This vulnerability allows low privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. Successful attacks can result in unauthorized ability to cause a hang or frequently repeatable crash (complete denial of service) of Oracle VM VirtualBox. Affected versions include those prior to 6.1.42 and prior to 7.0.6. Organizations utilizing VirtualBox VMs running Windows 7 and later are at risk.
The vulnerability has been assigned a CVSS 3.1 Base Score of 5.5, indicating a medium severity level with high availability impact. The CVSS vector indicates that the attack vector is local, with low complexity and low privileges required. The user interaction is not required, and there is no impact on confidentiality or integrity.
Given its exploitability and potential impact, organizations should prioritize patching immediately. The publication date of this vulnerability was January 18, 2023, and it remains critical for users of Oracle VM VirtualBox to apply the necessary updates to mitigate risks.
Risk to organizations includes potential denial of service, which can disrupt operations and impact service availability. Organizations must assess their exposure to this vulnerability and implement appropriate remediation strategies.
Vulnerability Details
This vulnerability allows low privileged attackers to cause a denial of service in Oracle VM VirtualBox. The CVSS score of 5.5 suggests that while the vulnerability is exploitable, it requires specific conditions to be met. Supported versions that are affected include those prior to 6.1.42 and prior to 7.0.6.
Technical Analysis
The root cause of this vulnerability lies within the core components of Oracle VM VirtualBox. Attackers may leverage local access to initiate their exploits, taking advantage of the low complexity of the attack method. Privileges required for successful exploitation are minimal, allowing attackers with basic access to impact the availability of the service.
No user interaction is required for this vulnerability, which increases the risk of exploitation. The attack vector is local, and while the attack complexity is low, it can lead to significant availability impact.
Risk & Impact Analysis
Real-world deployment of Oracle VM VirtualBox poses a risk to organizations that do not address this vulnerability. The potential denial of service could impact productivity and service availability, leading to operational disruptions.
The urgency for remediation is underscored by the CVSS score of 5.5, which categorizes it as medium severity. Organizations should assess their vulnerability management strategies to ensure timely patching and reduce blast radius potential.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects Oracle VM VirtualBox versions prior to 6.1.42 and prior to 7.0.6. Organizations should ensure they are running the latest version to mitigate this risk.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply the latest patches provided by Oracle. For systems unable to immediately upgrade, consider implementing configuration hardening and network controls to limit exposure. Regular monitoring for unusual behavior is also recommended.
Detection Guidance
Organizations should monitor logs for indicators of unusual crashes or hangs within Oracle VM VirtualBox. Behavioral anomalies may also indicate potential exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-21899 lies in its demonstration of how local vulnerabilities can lead to significant availability impacts. Security teams should learn from this incident to enhance their vulnerability management protocols, focusing on rapid patch deployment and comprehensive monitoring.
Organizations are encouraged to engage in penetration testing to validate their defenses against similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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