The function CheckMic() 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_md5_hmac_veneer() or _rt_hmac_sha1_veneer(), resulting in a stack buffer over-read which can be exploited for 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 does not need to know the network's PSK.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: VDOO

Published: 2021-02-03T16:49:20

Updated: 2024-08-04T15:49:05.426Z

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

Link: CVE-2020-25853

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-02-03T17:15:14.187

Modified: 2021-02-08T18:23:25.117

Link: CVE-2020-25853

cve-icon Redhat

No data.