PT-2020-11820 · Google · Android

Published 2020-12-15 · Updated 2022-07-12 · CVE-2020-0485

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Android versions Android-11

Description In the areFunctionsSupported function of UsbBackend.java, there is a possible access to tethering from a guest account due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Recommendations For Android version Android-11, consider restricting access to the areFunctionsSupported function of UsbBackend.java to prevent local escalation of privilege until a patch is available. As a temporary workaround, disabling tethering functionality from guest accounts may also help minimize the risk of exploitation.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2020-0485

Affected Products

Android

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-0485 · Security Note
• https://source.android.com/security/bulletin/pixel/2020-12-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-0485 · Vendor Advisory
• https://t.me/cvenotify/7108 · Telegram Post
• https://t.me/cibsecurity/20824 · Telegram Post