CVE-2021-2394

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core)

Critical · published July 20, 2021

Patch now

High probability of exploitation

CVSS calls it critical at 9.8. It sits in the 99.5th percentile for exploit probability.

CVSS v3.1
9.8
EPSS
76%
Percentile
99.5
In the wild
Unconfirmed
What it is

🚨 An unauthenticated attacker can exploit this vulnerability with minimal effort! Just like that neighbor who lets themselves into your backyard through an open gate, this flaw in Oracle WebLogic Server is alarmingly simple to breach. 🔥 Think of Oracle WebLogic Server as a high-tech vault that, unfortunately, left the door wide open. An attacker can stroll right in, bypassing security checks as if they were never there, gaining access to the vault's treasures without breaking a sweat. If successfully exploited, an attacker could take complete control of the Oracle WebLogic Server, jeopardizing all data stored within. This means they could read, modify, or even delete sensitive information, leading to potentially catastrophic consequences for your organization. The implications for confidentiality, integrity, and availability are absolutely devastating!

Put simply

Think of Oracle WebLogic Server as a high-tech vault that, unfortunately, left the door wide open. An attacker can stroll right in, bypassing security checks as if they were never there, gaining access to the vault's treasures without breaking a sweat. This vulnerability allows unauthenticated attackers with network access via T3 or IIOP protocols to compromise Oracle WebLogic Server due to a lack of authentication checks. Essentially, it opens the floodgates for malicious actors to take over the server without needing any credentials.

What to do

If successfully exploited, an attacker could take complete control of the Oracle WebLogic Server, jeopardizing all data stored within. This means they could read, modify, or even delete sensitive information, leading to potentially catastrophic consequences for your organization. The implications for confidentiality, integrity, and availability are absolutely devastating! To protect your systems, patch your Oracle WebLogic Server immediately to the latest version. Ensure you upgrade from any affected versions—10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0—to close this critical vulnerability. Also, consider employing strict network access controls to limit exposure. You’ve got this! With a quick patch and some diligence, you can lock this door tight and keep those intruders out! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.76381 · 99.5th percentile
Published
2021-07-20T22:44Z
EPSS history
Timeline
  • 20 JUL 22:44Z
    Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core)
    cvelistv5