CVE-2021-0341

HIGH

Android 8.1-11 - Improper Certificate Validation in OkHostnameVerifier

Title source: llm

Description

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

References (1)

Core 1

Core References

Patch, Vendor Advisory x_refsource_misc

https://source.android.com/security/bulletin/2021-02-01

Scores

CVSS v3 7.5

EPSS 0.0088

EPSS Percentile 54.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE

CWE-295

Status published

Products (5)

com.squareup.okhttp3/okhttp 0 - 4.9.2Maven

google/android 8.1

google/android 9.0

google/android 10.0

google/android 11.0

Published Feb 10, 2021

Tracked Since Feb 18, 2026