oracle weblogic-server CVE-2023-21839 vulnerability in Oracle Products
Published on January 18, 2023

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Vendor Advisory NVD

Known Exploited Vulnerability

This Oracle WebLogic Server Unspecified Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Oracle WebLogic Server contains an unspecified vulnerability that allows an unauthenticated attacker with network access via T3, IIOP, to compromise Oracle WebLogic Server.

The following remediation steps are recommended / required by May 22, 2023: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2023-21839 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. It has the highest possible exploitability rating (3.9). The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

What is a Marshaling, Unmarshaling Vulnerability?

The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

CVE-2023-21839 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.


Products Associated with CVE-2023-21839

You can be notified by stack.watch whenever vulnerabilities like CVE-2023-21839 are published in these products:

Oracle Weblogic Server
 
Oracle
 

What versions are vulnerable to CVE-2023-21839?