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Oracle January 2021 Critical Patch Update Includes Fixes for Five Critical WebLogic Flaws (CVE-2021-2109)

Oracle January 2021 Critical Patch Update Includes Fixes for Five Critical WebLogic Flaws (CVE-2021-2109)

Oracle’s first Critical Patch Update of 2021 addressed 329 security updates across 25 product families, including five new critical flaws in Oracle WebLogic Server.

Background

On January 19, Oracle released the Critical Patch Update (CPU) for January 2021, its first quarterly release for the year. This quarterly update contains fixes for 202 CVEs in 329 security updates across 25 Oracle product families. Out of the 329 security updates published this quarter, over 42% were assigned a medium severity. Critical vulnerabilities only accounted for 14% of the security updates patched this quarter.


* Chart is accurate as of January 19, 2021

Analysis

This quarter’s update includes fixes for 47 critical CVEs. The Oracle Fusion Middleware category contained the highest number of patches at 60, representing just over 18% of the patches from this quarter. A full breakdown of the patches can be seen in the table below:

Oracle Product Family Number of Patches Remote Exploit without Auth
Oracle Fusion Middleware 60 47
Oracle Financial Services Applications 50 41
Oracle MySQL 43 5
Oracle Retail Applications 32 20
Oracle E-Business Suite 31 29
Oracle Virtualization 17 0
Oracle Communications 12 7
Oracle Supply Chain 11 11
Oracle Database Server 8 1
Oracle Communications Applications 8 6
Oracle Enterprise Manager 8 8
Oracle PeopleSoft 8 6
Oracle Construction and Engineering 7 5
Oracle Hyperion 7 5
Oracle Health Sciences Applications 5 3
Oracle JD Edwards 5 5
Oracle Siebel CRM 4 1
Oracle Systems 4 3
Oracle Insurance Applications 3 1
Oracle Food and Beverage Applications 2 1
Oracle GraalVM 2 2
Oracle Global Lifecycle Management 1 0
Oracle Secure Backup 1 0
Oracle Java SE 1 1
Oracle Utilities Applications 1 1

Two product families contained no exploitable vulnerabilities

This quarter and for the first time in recent memory, Oracle assigned no exploitable CVEs to two particular product families: Oracle Global Lifecycle Management and Oracle Secure Backup. This means that these two products did not contain any vulnerabilities that Oracle considered to be exploitable by an attacker. However, Oracle did note that this quarter’s updates include third party patches for five CVEs:

CVE Oracle Product Family Third Party Software
CVE-2019-12402 Oracle Global Lifecycle Management Apache Commons Compress
CVE-2020-7064 Oracle Secure Backup PHP
CVE-2020-1198 Oracle Secure Backup Apache HTTP Server
CVE-2020-11993 Oracle Secure Backup Apache HTTP Server
CVE-2020-9490 Oracle Secure Backup Apache HTTP Server

Five New Critical Vulnerabilities in Oracle WebLogic Server

As part of this quarter’s patch update, Oracle addressed five new vulnerabilities in Oracle WebLogic Server, a prominent application server solution within Oracle’s Fusion Middleware Product Family. Each quarter, we keep an eye out for newly disclosed flaws in WebLogic Server because of their favorability with attackers. This is supported in the findings from our 2020 Threat Landscape Retrospective Report, where we highlight four noteworthy vulnerabilities in Oracle WebLogic Server that were exploited in-the-wild.

The five vulnerabilities in WebLogic Server addressed this quarter includes:

CVE Component CVSSv3
CVE-2021-1994 Web Services (HTTP) 9.8
CVE-2021-2047 Core Components (IIOP, T3) 9.8
CVE-2021-2064 Core Components (IIOP, T3) 9.8
CVE-2021-2108 Core Components (IIOP, T3) 9.8
CVE-2021-2075 Samples (IIOP, T3) 9.8

All five vulnerabilities are considered “easily exploitable” according to Oracle, and successful exploitation would lead to a complete takeover of the WebLogic Server.

Fusion Middleware release contains patches for CVE-2020-14750

According to a note from Oracle in this quarter’s release, the Fusion Middleware product family contains patches for CVE-2020-14750, a patch bypass for CVE-2020-14882, which was initially patched in Oracle’s October 2020 CPU release. However, due to the discovery of the patch bypass and in-the-wild exploitation, Oracle released a fix as part of an out-of-band (OOB) patch. The January 2021 CPU includes this fix as part of the Fusion Middleware release to ensure organizations that did not apply the OOB patch receive these critical patches.

Proof of concept

At the time this blog post was published, a writeup on the exploitation of CVE-2021-2109, a WebLogic remote code execution vulnerability, was available. Details from the writeup include screenshots showing exploitation and technical details which could be used to create a working proof-of-concept.

Solution

Customers are advised to apply all relevant patches in this quarter’s CPU. Please refer to the January 2021 advisory for full details.

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