CVE-2021-0645 — HIGH (7.8) — White Hats Nepal

Vulnerability Description

In shouldBlockFromTree of ExternalStorageProvider.java, there is a possible permissions bypass. This could lead to local escalation of privilege, allowing an app to read private app directories in external storage, which should be restricted in Android 11, with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-157320644

CVSS Score

7.8

HIGH

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Google	Android	11.0

Related Weaknesses (CWE)

CWE-863

References

https://source.android.com/security/bulletin/2021-08-01PatchVendor Advisory
https://source.android.com/security/bulletin/2021-08-01PatchVendor Advisory

FAQ

What is CVE-2021-0645?

CVE-2021-0645 is a vulnerability with a CVSS score of 7.8 (HIGH). In shouldBlockFromTree of ExternalStorageProvider.java, there is a possible permissions bypass. This could lead to local escalation of privilege, allowing an app to read private app directories in ext...

How severe is CVE-2021-0645?

CVE-2021-0645 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-0645?

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