CVE-2020-14756 Deserialization in Utilities Framework

Critical 9.8 Published 20 Jan 2021 Updated 26 Sep 2024

Unauthenticated attackers can take over Oracle Coherence via network access, leading to full system compromise.

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-2020-14756?

CVE-2020-14756 is a critical unsafe deserialization vulnerability in Oracle Coherence, published on 20 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core Components). Supported versions that are affected are 3.7.1.0, 12.1.3.0.0, 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 IIOP, T3 to compromise Oracle Coherence. Successful attacks of this vulnerability can result in takeover of Oracle Coherence. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Which versions are affected by CVE-2020-14756?

It affects 2 products.

Products include Oracle Coherence, Oracle Utilities Framework.

How do I fix CVE-2020-14756?

No fix has been published for CVE-2020-14756 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-2020-14756 being exploited?

There is no known exploitation of CVE-2020-14756 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

All Oracle Coherence vulnerabilities

Sources

Also known as GHSA-p7pp-gqpg-99cg.