CVE-2021-2371 Denial of service in Coherence

High 7.5 Published 20 Jul 2021 Updated 26 Sep 2024

Unauthenticated attackers can cause a complete denial of service in Oracle Coherence via network access.

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-2021-2371?

CVE-2021-2371 is a high-severity denial of service vulnerability in Oracle Coherence, published on 20 Jul 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). 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 T3, IIOP to compromise Oracle Coherence. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Coherence. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Which versions are affected by CVE-2021-2371?

It affects 1 product.

Products include Oracle Coherence.

How do I fix CVE-2021-2371?

No fix has been published for CVE-2021-2371 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-2371 being exploited?

There is no known exploitation of CVE-2021-2371 in the wild and no public exploit code.

All Oracle Coherence vulnerabilities

Sources

Also known as GHSA-r2p9-7wp8-88mg.