Vulnerability identifier: #VU53825

Vulnerability risk: Medium

CVSSv3.1: 7 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27302

CWE-ID: CWE-121

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
RTL8170C
Hardware solutions / Firmware
RTL8195AM
Hardware solutions / Firmware

Vendor: Realtek

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

RTL8170C: All versions

RTL8195AM: All versions

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External links
http://www.vdoo.com/blog/realtek-wifi-vulnerabilities-zero-day

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.