PT-2021-13404 · Google · Android

Published 2021-12-15 · Updated 2022-07-12 · CVE-2021-0999

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 The issue is related to a missing permission check in the broadcast definition in AndroidManifest.xml, which could allow setting the A2DP bluetooth device connection state. 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 broadcast definition in AndroidManifest.xml to minimize the risk of exploitation. As a temporary workaround, review and ensure proper permission checks are in place for A2DP bluetooth device connections. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2021-0999

Affected Products

Android

References · 4

• https://osv.dev/vulnerability/CVE-2021-0999 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-0999 · Security Note
• https://source.android.com/security/bulletin/pixel/2021-12-01 · Vendor Advisory
• https://t.me/cibsecurity/34081 · Telegram Post