Stack-based buffer overflow in RTL8170C and RTL8195AM - CVE-2020-27301
Published: June 5, 2021 / Updated: April 21, 2022
Vulnerability identifier: #VU53824
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2020-27301
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
Public exploit is available
Vendor: Realtek
Affected software:
RTL8170C
RTL8195AM
RTL8170C
RTL8195AM
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when parsing WPA2 key. A remote attacker with knowledge of network PSK can send specially crafted packets to devices connected to the WiFi network, trigger stack-based buffer overflow and execute arbitrary code on WiFi client devices.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2020-27301
Install updates from vendor's website.