Stack-based buffer overflow in Realtek products - CVE-2020-25857
Published: February 3, 2021 / Updated: February 8, 2021
Vulnerability identifier: #VU50412
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-25857
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the "ClientEAPOLKeyRecvd()" function. A remote unauthenticated attacker can inject a specially crafted packet to the WPA2 handshake, trigger stack-based buffer overflow and cause a denial of service condition on the target system.
Affected software
RTL8195AM
RTL8711AM
RTL8711AF
RTL8710AF
RTL8711AM
RTL8711AF
RTL8710AF
How to mitigate CVE-2020-25857
Install updates from vendor's website.
RTL8195AM - update to 2.0.8
RTL8711AM - update to 2.0.8
RTL8711AF - update to 2.0.8
RTL8710AF - update to 2.0.8
RTL8711AM - update to 2.0.8
RTL8711AF - update to 2.0.8
RTL8710AF - update to 2.0.8