Vulnerability identifier: #VU50405

Vulnerability risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-9395

CWE-ID: CWE-121

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
RTL8195AM
Hardware solutions / Firmware
RTL8711AM
Hardware solutions / Firmware
RTL8711AF
Hardware solutions / Firmware
RTL8710AF
Hardware solutions / Firmware

Vendor:

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing a malformed EAPOL-Key packet with a long keydata buffer. A remote authenticated attacker on the local network can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

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External links
http://github.com/ambiot/amb1_arduino/commit/dcea55cf9775a0166805b3db845b237ecd5e74ea#diff-d06e7a87f34cc464a56799a419033014
http://github.com/ambiot/amb1_sdk/commit/bc5173d5d4faf6829074b0f1e1b242c12b7777a3#diff-700c216fb376666eaeda0c892e8bdc09
http://www.amebaiot.com/en/security_bulletin/
http://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered

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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.