PT-2021-13353 · Google · Android

Published 2021-11-01 · Updated 2021-12-17 · CVE-2021-0923

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-12

Description In the createOrUpdate function of Permission.java, there is a possible way to gain internal permissions 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-12, consider restricting access to the createOrUpdate function in Permission.java until a patch is available. As a temporary workaround, review and manually verify all permission updates to minimize the risk of exploitation.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

ASB-A-195338390

CVE-2021-0923

Affected Products

Android

References · 6

• https://source.android.com/security/bulletin/2021-11-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-0923 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-0923 · Security Note
• https://osv.dev/vulnerability/ASB-A-195338390 · Vendor Advisory
• https://android.googlesource.com/platform/frameworks/base/+/63777c0ca8e194ab3efc51905e83b07ea0d351a9 · Note
• https://t.me/cibsecurity/34096 · Telegram Post