CVE-2021-0535: Use After Free
In wpasctrlmsgqueuetimeout of ctrlifaceunix.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
android/platform/external/wpa_supplicant_8to a version that resolves this vulnerability.Fixed in 11:2021-06-01
Event History
Frequently Asked Questions
Who is realistically exposed to this issue?
The affected product data identifies Android 11 and the Android wpa_supplicant_8 component. Exploitation is local, so the attacker needs execution on the affected device rather than network-only access.
What level of access does an attacker need before exploiting it?
The supplied CVSS vector specifies high privileges (PR:H), and the description states that System execution privileges are needed. No user interaction is required.
What is the likely impact after successful exploitation?
The issue is a use-after-free that can cause memory corruption and lead to local privilege escalation. The provided vector rates confidentiality, integrity, and availability impact as high.