CVE-2023-21893

Oracle ODP.NET Managed Driver Improper Certificate Validation Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

Vulnerability in the Oracle Data Provider for .NET component of Oracle Database Server. Supported versions that are affected are 19c and 21c. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TCPS to compromise Oracle Data Provider for .NET. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of Oracle Data Provider for .NET. Note: Applies also to Database client-only on Windows platform. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

Vulnerabilidad en el componente Oracle Data Provider para .NET de Oracle Database Server. Las versiones compatibles que se ven afectadas son 19c y 21c. Una vulnerabilidad difícil de explotar permite que un atacante no autenticado con acceso a la red a través de TCPS comprometa el proveedor de datos de Oracle para .NET. Los ataques exitosos requieren la interacción humana de una persona distinta del atacante. Los ataques exitosos a esta vulnerabilidad pueden resultar en la adquisición de Oracle Data Provider para .NET. Nota: También se aplica al cliente de base de datos únicamente en la plataforma Windows. CVSS 3.1 Puntuación base 7,5 (impactos en la confidencialidad, la integridad y la disponibilidad). Vector CVSS: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H).

This vulnerability allows network-adjacent attackers to compromise transport security on affected installations of Oracle ODP.NET Managed Driver. An attacker must first obtain the ability to intercept and alter network traffic in order to exploit this vulnerability.
The specific flaw exists within the ValidateRemoteCertificate function. The issue results from the lack of proper validation of the server certificate. An attacker can leverage this vulnerability to disclose communications between the client and the server or to insert fraudulent server responses.

*Credits: Georg Jung

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2022-12-17 CVE Reserved
2023-01-17 CVE Published
2024-08-09 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-284: Improper Access Control

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpujan2023.html	2023-01-25

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Oracle Search vendor "Oracle"		Database Server Search vendor "Oracle" for product "Database Server"				19c Search vendor "Oracle" for product "Database Server" and version "19c"		-		Affected
Oracle Search vendor "Oracle"		Database Server Search vendor "Oracle" for product "Database Server"				21c Search vendor "Oracle" for product "Database Server" and version "21c"		-		Affected