CVE-2023-21838 Denial of service in WebLogic Server
Unauthenticated attackers can cause a complete denial of service on Oracle WebLogic Server 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-2023-21838?
CVE-2023-21838 is a high-severity denial of service vulnerability in Oracle Weblogic Server, published on 17 Jan 2023. 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 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 WebLogic Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle WebLogic Server. 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).
Weakness: CWE-400
Which versions are affected by CVE-2023-21838?
It affects 1 product.
Products include Oracle Weblogic Server.
How do I fix CVE-2023-21838?
No fix has been published for CVE-2023-21838 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-2023-21838 being exploited?
There is no known exploitation of CVE-2023-21838 in the wild and no public exploit code.
Other vulnerabilities in Oracle Weblogic Server
Sources
Also known as GHSA-3cch-g7r8-54q2.