#VU50405 Stack-based buffer overflow in Realtek products - CVE-2020-9395
Published: July 7, 2020 / Updated: February 8, 2021
Vulnerability identifier: #VU50405
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-9395
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
RTL8195AM
RTL8711AM
RTL8711AF
RTL8710AF
RTL8195AM
RTL8711AM
RTL8711AF
RTL8710AF
Software vendor:
Realtek
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 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.
Remediation
Install update from vendor's website.
External links
- https://github.com/ambiot/amb1_arduino/commit/dcea55cf9775a0166805b3db845b237ecd5e74ea#diff-d06e7a87f34cc464a56799a419033014
- https://github.com/ambiot/amb1_sdk/commit/bc5173d5d4faf6829074b0f1e1b242c12b7777a3#diff-700c216fb376666eaeda0c892e8bdc09
- https://www.amebaiot.com/en/security_bulletin/
- https://www.vdoo.com/blog/realtek-rtl8195a-vulnerabilities-discovered