PT-2022-10980 · Google · Android

Published 2022-03-01 · Updated 2022-07-12 · CVE-2021-39697

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-11 through Android-12

Description The issue is related to a missing permission check in the checkFileUriDestination function of DownloadProvider.java. This could allow bypassing external storage private directories protection, leading to local escalation of privilege. User execution privileges are needed for exploitation, and user interaction is not required.

Recommendations For Android versions Android-11 through Android-12, consider restricting access to the checkFileUriDestination function of DownloadProvider.java until a patch is available. As a temporary workaround, review and enforce proper permission checks for external storage private directories to minimize the risk of exploitation.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

ASB-A-200813547

CVE-2021-39697

Affected Products

Android

References · 6

• https://osv.dev/vulnerability/ASB-A-200813547 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39697 · Vendor Advisory
• https://source.android.com/security/bulletin/2022-03-01 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-39697 · Security Note
• https://android.googlesource.com/platform/packages/providers/DownloadProvider/+/9ff84f6d353a7647efba91d74e31d17ba6b765b7 · Note
• https://android.googlesource.com/platform/packages/providers/DownloadProvider/+/0dc5048914eb6a7f919c8749172b971cbb315870 · Note