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 internal function, rt_arc4_crypt_veneer() or _AES_UnWRAP_veneer(), 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.
[
{
"product": "Realtek RTL8195A Wi-Fi Module",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Versions before 2020-04-21 (up to and excluding 2.08)"
}
]
}
]