CVE-2021-0320 — MEDIUM (4.7)

Vulnerability Description

In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Android ID: A-169933423.

CVSS Score

4.7

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Google	Android	10.0

Related Weaknesses (CWE)

CWE-362

References

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

FAQ

What is CVE-2021-0320?

CVE-2021-0320 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In is_device_locked and set_device_locked of keystore_keymaster_enforcement.h, there is a possible bypass of lockscreen requirements for keyguard bound keys due to a race condition. This could lead to...

How severe is CVE-2021-0320?

CVE-2021-0320 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-0320?

Check the references section above for vendor advisories and patch information. Affected products include: Google Android.