The function DecWPA2KeyData() in the Realtek RTL8195A Wi-Fi Module prior to versions released in April 2020 (up to and excluding 2.08) does not validate the size parameter for an rtl_memcpy() operation, resulting in a stack buffer overflow which can be exploited for remote code execution or denial of service. An attacker can impersonate an Access Point and attack a vulnerable Wi-Fi client, by injecting a crafted packet into the WPA2 handshake. The attacker needs to know the network's PSK in order to exploit this.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: VDOO

Published: 2021-02-03T16:49:02

Updated: 2024-08-04T15:49:05.936Z

Reserved: 2020-09-23T00:00:00

Link: CVE-2020-25856

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-02-03T17:15:15.420

Modified: 2021-02-08T18:53:53.647

Link: CVE-2020-25856

cve-icon Redhat

No data.