CVE-2023-21967 : Vulnerability Insights and Analysis
Learn about CVE-2023-21967, impacting Oracle Java SE and GraalVM. An unauthenticated attacker via HTTPS can compromise systems, leading to denial of service. Mitigate with updates and security practices.
This CVE record pertains to a vulnerability in Oracle Java SE and Oracle GraalVM Enterprise Edition that could allow an unauthenticated attacker with network access via HTTPS to compromise the affected systems. Successful exploitation of this vulnerability could lead to unauthorized activities, such as causing a hang or crash of the affected software, resulting in a denial of service (DOS) condition.
Understanding CVE-2023-21967
This section delves into the details of CVE-2023-21967, including its impact, technical aspects, affected systems, and mitigation strategies.
What is CVE-2023-21967?
The vulnerability in Oracle Java SE and Oracle GraalVM Enterprise Edition (specifically in the JSSE component) affects multiple versions of the software, including Oracle Java SE versions 8u361, 8u361-perf, 11.0.18, 17.0.6, 20, and Oracle GraalVM Enterprise Edition versions 20.3.9, 21.3.5, and 22.3.1. It allows an unauthenticated attacker to compromise the systems through network access via HTTPS, potentially leading to a DOS scenario.
The Impact of CVE-2023-21967
Exploitation of this vulnerability could grant unauthorized access to hang or crash the Oracle Java SE and Oracle GraalVM Enterprise Edition software, affecting the availability of the services. This vulnerability is particularly concerning for systems running sandboxed Java Web Start applications or applets that load and execute untrusted code.
Technical Details of CVE-2023-21967
This section provides a detailed overview of the vulnerability, including its description, affected systems, and exploitation mechanism.
Vulnerability Description
The vulnerability in Oracle Java SE and Oracle GraalVM Enterprise Edition allows unauthenticated attackers to compromise the software via network access over HTTPS. Successful exploitation can lead to a complete denial of service by causing crashes or hangs in the affected systems.
Affected Systems and Versions
The vulnerability impacts Oracle Java SE versions 8u361, 8u361-perf, 11.0.18, 17.0.6, 20, as well as Oracle GraalVM Enterprise Edition versions 20.3.9, 21.3.5, and 22.3.1. Systems running these versions are at risk of exploitation.
Exploitation Mechanism
The vulnerability can be exploited by unauthenticated attackers with network access via HTTPS. By leveraging this vulnerability, attackers can compromise the integrity and availability of Oracle Java SE and Oracle GraalVM Enterprise Edition systems.
Mitigation and Prevention
In light of CVE-2023-21967, it is crucial to take immediate steps to secure the affected systems and implement long-term security practices to prevent similar vulnerabilities in the future.
Immediate Steps to Take
Administrators should apply patches and updates provided by Oracle to address the vulnerability. It is essential to ensure that all affected versions of Oracle Java SE and Oracle GraalVM Enterprise Edition are updated to the latest secure versions.
Long-Term Security Practices
To enhance the security posture of systems, organizations should follow best practices such as regular security audits, network segmentation, access control measures, and employee training on cybersecurity awareness.
Patching and Updates
Staying vigilant for security advisories from Oracle and promptly applying patches and updates is crucial to protect against known vulnerabilities like CVE-2023-21967. Regularly monitoring for security alerts and staying informed about potential threats is key to maintaining a secure environment.