PT-2021-13434 · Google · Android

Published 2021-12-15 · Updated 2021-12-17 · CVE-2021-1029

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-12

Description In the setClientStateLocked function of SurfaceFlinger.cpp, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Recommendations For Android version Android-12, update to a version that includes the fix for the issue in SurfaceFlinger.cpp. As a temporary workaround, consider restricting access to the setClientStateLocked function until a patch is available.

Fix

Memory Corruption

Use After Free

Weakness Enumeration

CWE-787

CWE-416

Related Identifiers

CVE-2021-1029

Affected Products

Android

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-1029 · Security Note
• https://source.android.com/security/bulletin/pixel/2021-12-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1029 · Vendor Advisory
• https://t.me/cibsecurity/34068 · Telegram Post