// For flags

CVE-2022-21618

OpenJDK: improper MultiByte conversion can lead to buffer overflow (JGSS, 8286077)

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

< 1%
*EPSS

Affected Versions

22
*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JGSS). Supported versions that are affected are Oracle Java SE: 17.0.4.1, 19; Oracle GraalVM Enterprise Edition: 21.3.3 and 22.2.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via Kerberos to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

Una vulnerabilidad en el producto Oracle Java SE, Oracle GraalVM Enterprise Edition de Oracle Java SE (componente: JGSS). Las versiones soportadas que están afectadas son Oracle Java SE: 17.0.4.1, 19; Oracle GraalVM Enterprise Edition: 21.3.3 y 22.2.0. La vulnerabilidad fácilmente explotable permite a un atacante no autenticado con acceso a la red por medio de Kerberos comprometer a Oracle Java SE, Oracle GraalVM Enterprise Edition. Los ataques con éxito de esta vulnerabilidad pueden resultar en una actualización no autorizada, insertar o eliminar el acceso a algunos de los datos accesibles de Oracle Java SE, Oracle GraalVM Enterprise Edition. Nota: Esta vulnerabilidad es aplicada a las implantaciones de Java, normalmente en clientes que ejecutan aplicaciones Java Web Start con sandbox o applets Java con sandbox, que cargan y ejecutan código que no es confiable (por ejemplo, código que viene de Internet) y dependen del sandbox de Java para la seguridad. Esta vulnerabilidad también puede ser explotada mediante el uso de APIs en el componente especificado, por ejemplo, mediante un servicio web que suministra datos a las APIs. CVSS 3.1 Puntuación Base 5.3 (Impactos en la Integridad). Vector CVSS: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

It was discovered that OpenJDK incorrectly handled long client hostnames. An attacker could possibly use this issue to cause the corruption of sensitive information. It was discovered that OpenJDK incorrectly randomized DNS port numbers. A remote attacker could possibly use this issue to perform spoofing attacks. It was discovered that OpenJDK did not limit the number of connections accepted from HTTP clients. An attacker could possibly use this issue to cause a denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-15 CVE Reserved
  • 2022-10-18 CVE Published
  • 2025-02-13 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions (22)