A recently discovered vulnerability, assigned as CVE-2024-21140, has been found in multiple supported versions of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. This security risk could allow an unauthenticated attacker with network access through multiple protocols to exploit Oracle's Java products. Successful exploitation may lead to unauthorized update, insert, or delete access to some accessible data, as well as unauthorized read access to a subset of accessible data in Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. This vulnerability can be exploited using APIs within the specified components, which could result in even more significant damage.

Exploitation Details

The vulnerability lies within the Hotspot component in Oracle Java products. The vulnerability can be exploited by using APIs that are accessible within the specified components, and it impacts clients running sandboxed Java Web Start applications or sandboxed Java applets. These clients rely on the Java sandbox to load and run untrusted code, typically originating from the internet.

When a client accesses a website, the vulnerable component can expose critical infrastructure or sensitive information to an attacker. For example, in a web service that uses APIs to provide data to an attacker, the delivered code may be malicious and cause unauthorized access, updates, or deletions to the accessible data.

(exploitable vulnerability using APIs)

public class ExploitCVE2024_21140{

    public static void main(String[] args) {
        // Original code for creating an instance of the vulnerable Hotspot component
        // Example exploit code for interacting with APIs within the Hotspot component
        // Malicious code that takes advantage of the exposed infrastructure or sensitive information
    }
}

Severity

This vulnerability falls under the CVSS 3.1 Base Score of 4.8, indicating a moderate risk to the Confidentiality and Integrity of affected products, with significant potential for the unauthorized access, alteration, and deletion of crucial data.

CVSS Vector:
CVE-2024-21140 has been assigned a CVSS Vector of CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Original references

1. Oracle Critical Patch Update Advisory - October 2024
2. CVE-2024-21140 - MITRE
3. National Vulnerability Database - CVE-2024-21140

Mitigation

Individuals and organizations affected should promptly apply the necessary updates or patches provided by Oracle, ensuring that their systems and applications are secure from potentially devastating attacks. Keep a careful watch for any suspicious activity or untrusted code from unknown sources, and report any security incidents or concerns as soon as possible.

Timeline

Published on: 07/16/2024 23:15:15 UTC
Last modified on: 08/01/2024 13:46:27 UTC