#VU59105 Use-after-free in wpa_supplicant - CVE-2021-0535
Published: December 29, 2021 / Updated: January 17, 2022
Vulnerability identifier: #VU59105
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-0535
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
wpa_supplicant
wpa_supplicant
Software vendor:
Jouni Malinen
Jouni Malinen
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the wpas_ctrl_msg_queue_timeout() function of ctrl_iface_unix.c file in wpa_supplicant. A local user can pass specially crafted data to the application, trigger a use-after-free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.