CVE-2020-2801 Deserialization in WebLogic Server

Critical 9.8 Published 15 Apr 2020 Updated 30 Sep 2024

Unauthenticated attackers can achieve full server takeover via network access using IIOP or T3 protocols.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-2801?

CVE-2020-2801 is a critical unsafe deserialization vulnerability in Oracle Weblogic Server, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via IIOP, T3 to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. Note: The patch for this issue will address the vulnerability only if the WLS instance is using JDK 1.7.0_191 or later, or JDK 1.8.0_181 or later. CVSS 3.0 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Which versions are affected by CVE-2020-2801?

It affects 1 product.

Products include Oracle Weblogic Server.

How do I fix CVE-2020-2801?

No fix has been published for CVE-2020-2801 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2020-2801 being exploited?

There is no known exploitation of CVE-2020-2801 in the wild and no public exploit code.

All Oracle Weblogic Server vulnerabilities

Sources

Also known as GHSA-r6c9-93g7-fmg3.