CVE-2023-21990 - Critical Vulnerability Found in Oracle VM VirtualBox, Affecting Prior Versions 6.1.44 and 7..8, Resulting in Potential Takeover

CVE-2023-21990 is a critical vulnerability discovered in the Oracle VM VirtualBox product of Oracle Virtualization. The vulnerability exists in the Core component and affects supported versions prior to 6.1.44 and prior to 7..8. This easily exploitable vulnerability allows a high privileged attacker with logon access to the infrastructure where Oracle VM VirtualBox executes to compromise the VirtualBox system.

While the vulnerability exists in the Oracle VM VirtualBox, the scope of attacks may significantly impact additional products due to scope change. Successful exploitation of this vulnerability can lead to a takeover of Oracle VM VirtualBox.

CVSS 3.1 Base Score for this vulnerability is 8.2, considering the Confidentiality, Integrity, and Availability impacts. The CVSS Vector is as follows: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Code Snippet (Example)

# Exploit for CVE-2023-21990
import requests
import base64

# Target Oracle VM VirtualBox Version (Prior to 6.1.44 or Prior to 7..8)
target_vbox_version = "6.1.43"
target_url = "http://<target_host>:<target_port>";

# Credentials for high privileged attacker
username = "attacker"
password = "h1ghPr1vP@$$"

# Payload for exploitation
payload = "<exploit_code_here>"

# Encode credentials and payload
encoded_cred = base64.b64encode(f"{username}:{password}".encode()).decode()
encoded_payload = base64.b64encode(payload.encode()).decode()

headers = {
    "Authorization": f"Basic {encoded_cred}",
    "Content-Type": "application/xml",
}

data = f"""
<exploit version="{target_vbox_version}">
    <payload>{encoded_payload}</payload>
</exploit>
"""

# Send exploit
response = requests.post(target_url, headers=headers, data=data)

if response.status_code == 200:
    print("Exploit sent successfully.")
else:
    print("Exploit failed.")

Please note that the above code snippet is for demonstration purposes only.

Original References

1. Oracle Security Alert Advisory - CVE-2023-21990: https://www.oracle.com/security-alerts/alert-cve-2023-21990.html
2. NVD - CVE-2023-21990: https://nvd.nist.gov/vuln/detail/CVE-2023-21990

Exploit Details

A successful attack requires the high privileged attacker to have logon access to the target infrastructure where Oracle VM VirtualBox is running. This exploit takes advantage of the Core component vulnerability in Oracle VM VirtualBox, which can result in a takeover of the affected system.

To safeguard against this vulnerability, it is recommended to update Oracle VM VirtualBox to the latest secured version (6.1.44 or 7..8) or apply the appropriate patches provided by Oracle. Administrators should always enforce strict access controls and routinely monitor the activities of users with high privileges to mitigate the risk of exploitation.

Stay informed about the latest security vulnerabilities and follow best practices to ensure your systems remain safe and secure.

Timeline

Published on: 04/18/2023 20:15:00 UTC
Last modified on: 04/18/2023 20:37:00 UTC