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.
References
Link | Resource |
---|---|
https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered/ | Exploit Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: VDOO
Published: 2021-02-03T16:49:20
Updated: 2021-02-03T16:49:20
Reserved: 2020-09-23T00:00:00
Link: CVE-2020-25853
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-02-03T17:15:14.187
Modified: 2021-02-08T18:23:25.117
Link: CVE-2020-25853
JSON object: View
Redhat Information
No data.