Vulnerability Details : CVE-2021-0320
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.
Vulnerability category: Information leak
Published
2021-01-11 22:15:14
Updated
2021-01-13 16:45:31
Exploit prediction scoring system (EPSS) score for CVE-2021-0320
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-0320
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:P/I:N/A:N |
3.4
|
2.9
|
nvd@nist.gov |
|
4.7
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.0
|
3.6
|
nvd@nist.gov |
CWE ids for CVE-2021-0320
-
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-0320
-
https://source.android.com/security/bulletin/2021-01-01
Android Security Bulletin—January 2021 | Android Open Source ProjectPatch;Vendor Advisory
Products affected by CVE-2021-0320
- cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*