PT-2020-20632 · Realtek · Rtl8711Am+3

Published 2020-07-06 · Updated 2021-07-21 · CVE-2020-9395

Positive Technologies (AI Summary)

CVSS v3.1

8.0

High

Base vector

AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Realtek RTL8195AM versions prior to 2.0.6 Realtek RTL8711AM versions prior to 2.0.6 Realtek RTL8711AF versions prior to 2.0.6 Realtek RTL8710AF versions prior to 2.0.6

Description A stack-based buffer overflow issue exists in the client code handling WPA2's 4-way-handshake. This occurs via a malformed EAPOL-Key packet with a long keydata buffer.

Recommendations For Realtek RTL8195AM versions prior to 2.0.6, update to version 2.0.6 or later to resolve the issue. For Realtek RTL8711AM versions prior to 2.0.6, update to version 2.0.6 or later to resolve the issue. For Realtek RTL8711AF versions prior to 2.0.6, update to version 2.0.6 or later to resolve the issue. For Realtek RTL8710AF versions prior to 2.0.6, update to version 2.0.6 or later to resolve the issue. As a temporary workaround, consider restricting access to the WPA2 4-way-handshake functionality until a patch is available.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2020-9395

OPENSUSE-SU-2024:10895-1

Affected Products

Rtl8195Am

Rtl8710Af

Rtl8711Af

Rtl8711Am

References · 7

• https://github.com/ambiot/amb1_sdk/commit/bc5173d5d4faf6829074b0f1e1b242c12b7777a3#diff-700c216fb376666eaeda0c892e8bdc09 · Patch
• https://github.com/ambiot/amb1_arduino/commit/dcea55cf9775a0166805b3db845b237ecd5e74ea#diff-d06e7a87f34cc464a56799a419033014 · Patch
• https://osv.dev/vulnerability/CVE-2020-9395 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-9395 · Security Note
• https://amebaiot.com/en/security_bulletin · Note
• https://t.me/cvenotify/4888 · Telegram Post
• https://t.me/cybersecuritytechnologies/2634 · Telegram Post