CVE-2021-39704: High severity Google Android vulnerability
In deleteNotificationChannelGroup of NotificationManagerService.java, there is a possible way to run foreground service without user notification due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
android/platform/frameworks/baseto a version that resolves this vulnerability.Fixed in 11:2022-03-01 - Upgrade
Upgrade
android/platform/frameworks/baseto a version that resolves this vulnerability.Fixed in 12:2022-03-01 - Upgrade
Upgrade
android/platform/frameworks/baseto a version that resolves this vulnerability.Fixed in 12L:2022-03-01
Event History
Frequently Asked Questions
What is the severity of CVE-2021-39704?
CVE-2021-39704 is classified as a high-severity vulnerability due to its potential for local escalation of privilege.
How do I fix CVE-2021-39704?
To mitigate CVE-2021-39704, users should update their Android devices to the latest security patch released by Google.
What versions of Android are affected by CVE-2021-39704?
CVE-2021-39704 affects Android versions 10.0, 11.0, and 12.0.
What impact does CVE-2021-39704 have on user privacy?
CVE-2021-39704 can potentially allow malicious apps to run foreground services without user notification, compromising user privacy.
Is user interaction required to exploit CVE-2021-39704?
No, exploiting CVE-2021-39704 does not require user interaction.