CVE-2021-0341

okhttp: information disclosure via improperly used cryptographic function

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In verifyHostName of OkHostnameVerifier.java, there is a possible way to accept a certificate for the wrong domain due to improperly used crypto. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11Android ID: A-171980069

En la función verifyHostName del archivo OkHostnameVerifier.java, existe una forma posible de aceptar un certificado para el dominio incorrecto debido a un uso de criptografía inapropiada. Esto podría conllevar a una divulgación de información remota sin ser necesarios privilegios de ejecución adicionales. No es requerida una interacción del usuario para su explotación. Producto: Android, Versiones: Android-8.1 Android-9 Android-10 Android-11, ID de Android: A-171980069

Red Hat Single Sign-On is an integrated sign-on solution, available as a Red Hat JBoss Middleware for OpenShift containerized image. The Red Hat Single Sign-On for OpenShift image provides an authentication server that you can use to log in centrally, log out, and register. You can also manage user accounts for web applications, mobile applications, and RESTful web services. This erratum releases a new image for Red Hat Single Sign-On 7.6.3 for use within the Red Hat OpenShift Container Platform cloud computing Platform-as-a-Service for on-premise or private cloud deployments, aligning with the standalone product release. Issues addressed include denial of service and information leakage vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-11-06 CVE Reserved
2021-02-10 CVE Published
2024-08-03 CVE Updated
2025-06-16 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-295: Improper Certificate Validation

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://source.android.com/security/bulletin/2021-02-01	2021-02-12

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2021-0341	2024-09-12
https://bugzilla.redhat.com/show_bug.cgi?id=2154086	2024-09-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				8.1 Search vendor "Google" for product "Android" and version "8.1"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				9.0 Search vendor "Google" for product "Android" and version "9.0"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				10.0 Search vendor "Google" for product "Android" and version "10.0"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				11.0 Search vendor "Google" for product "Android" and version "11.0"		-		Affected