A vulnerability has been discovered in the Oracle Java SE, Oracle GraalVM Enterprise Edition, and Oracle GraalVM for JDK product of Oracle Java SE. The component affected by this vulnerability is Hotspot, and it affects the following supported versions:

Oracle GraalVM for JDK: 17..7 and 20..1

This vulnerability is difficult to exploit but can result in unauthorized read access to a subset of data. The vulnerability can be exploited using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments running sandboxed Java Web Start applications or sandboxed Java applets that load and run untrusted code (e.g., code from the internet) and rely on the Java sandbox for security.

The CVSS 3.1 Base Score for this vulnerability is 3.7 (Confidentiality impacts). The CVSS Vector is (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).

Code Snippet

Although no specific code snippet is provided for this vulnerability, it is important to understand that the affected component is Hotspot. Hotspot is a core component of the Java Virtual Machine (JVM) and can be used by developers via APIs and web services. An attacker could potentially exploit this vulnerability by crafting a malicious input to the API, leading to unauthorized read access to sensitive data.

For more details about this vulnerability, please consult the following original references

- Oracle Critical Patch Update Advisory - April 2023: Oracle CPU Advisory - CVE-2023-22045
- Common Vulnerabilities and Exposures (CVE) Entry - CVE-2023-22045: CVE - CVE-2023-22045

Exploit Details

To exploit this vulnerability, an unauthenticated attacker with network access via multiple protocols can compromise Oracle Java SE, Oracle GraalVM Enterprise Edition, and Oracle GraalVM for JDK. Successful attacks can result in unauthorized read access to a subset of data accessible by these technologies.

It is important to highlight that the exploitation requires using APIs in the specified Component (Hotspot), e.g. through a web service that supplies data to the APIs. This vulnerability is also applicable to Java deployments that run sandboxed Java Web Start applications or sandboxed Java applets. These clients load and run untrusted code (e.g., from the internet) and rely on the Java sandbox for security.

Mitigation and Recommendations

To mitigate the risk posed by this vulnerability, organizations are advised to apply the necessary patches provided by Oracle through their Critical Patch Update Advisory. Regularly updating software and ensuring that all systems are running the latest versions is an essential part of maintaining a secure environment.

In addition, organizations should enforce strong access controls and network segmentation to limit the potential attack surface. Further, security best practices should be implemented to monitor and detect any potential exploitation attempts, and incident response procedures should be established to ensure a swift and effective response to any security breaches.

Conclusion

CVE-2023-22045 presents a vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition, and Oracle GraalVM for JDK products that can lead to unauthorized read access to sensitive data. While difficult to exploit, organizations should apply the necessary patches and follow recommended security best practices to reduce the risk of exploitation.

Timeline

Published on: 07/18/2023 21:15:00 UTC
Last modified on: 09/19/2023 11:16:00 UTC