Weblogic WLS Component IIOP Protocol Remote Code Execution Vulnerability (CVE-2020-2551) Security Alert

Weblogic WLS Component IIOP Protocol Remote Code Execution Vulnerability (CVE-2020-2551) Security Alert

January 29, 2020 | Mina Hao

Overview

In January 2020, the critical patch update announcement CPU (Critical Patch Update) officially released by Oracle, a remote code execution vulnerability (CVE-2020-2551) in the IIOP protocol of Weblogic WLS component was announced.

The vulnerability can bypass the latest security patches released by Oracle in October 2019. An attacker can remotely access Weblogic Server through the IIOP protocol, passing in malicious data, thereby gaining server privileges and remotely executing arbitrary code without authorization. The official CVSS score is 9.8.

The IIOP protocol accesses remote objects in the form of a Java interface and is enabled by default.

Affected Products and Versions

  • Oracle WebLogic Server 10.3.6.0.0
  • Oracle WebLogic Server 12.1.3.0.0
  • Oracle WebLogic Server 12.2.1.3.0
  • Oracle WebLogic Server 12.2.1.4.0

Solution

Oracle has released patches. Users can refer to the “Affected Products and Patch Information” section in the official announcement for updates.

Note: The official CPU of Oracle only released the patch of 12.2.1.4.0. Other versions of the patch will be released on January 31, 2020. Please pay attention to relevant users and install and repair in time after the patch is released.

Mitigation measures

This vulnerability can be mitigated by closing the IIOP protocol. The operation is as follows: In the Weblogic console, select “Services”-> “AdminServer”-> “Protocol” and uncheck the “Enable IIOP” checkbox. And restart the Weblogic project for the configuration to take effect.

Reference

Official link:

https://www.oracle.com/security-alerts/cpujan2020.html

Statement

This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.

About NSFOCUS

NSFOCUS, Inc., a global network and cyber security leader, protects enterprises and carriers from advanced cyber attacks. The company’s Intelligent Hybrid Security strategy utilizes both cloud and on-premises security platforms, built on a foundation of real-time global threat intelligence, to provide multi-layered, unified and dynamic protection against advanced cyber attacks.

NSFOCUS works with Fortune Global 500 companies, including four of the world’s five largest financial institutions, organizations in insurance, retail, healthcare, critical infrastructure industries as well as government agencies. NSFOCUS has technology and channel partners in more than 60 countries, is a member of both the Microsoft Active Protections Program (MAPP), and the Cloud Security Alliance (CSA).

A wholly owned subsidiary of NSFOCUS Information Technology Co. Ltd., the company has operations in the Americas, Europe, the Middle East and Asia Pacific.