Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-9395

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
06/07/2020
Last modified:
21/07/2021

Description

An issue was discovered on Realtek RTL8195AM, RTL8711AM, RTL8711AF, and RTL8710AF devices before 2.0.6. A stack-based buffer overflow exists in the client code that takes care of WPA2's 4-way-handshake via a malformed EAPOL-Key packet with a long keydata buffer.

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.00 HIGH
Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.00
Severity 3.x
HIGH
Vector 2.0
AV:A/AC:M/Au:S/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.90 MEDIUM
Vector: AV:A/AC:M/Au:S/C:P/I:P/A:P

Attack Vector (AV): Adjacent
Attack Complexity (AC): Medium
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
4.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:realtek:rtl8711af_firmware:*:*:*:*:*:*:*:* 2.0.6 (excluding)
cpe:2.3:h:realtek:rtl8711af:-:*:*:*:*:*:*:*
cpe:2.3:o:realtek:rtl8711am_firmware:*:*:*:*:*:*:*:* 2.0.6 (excluding)
cpe:2.3:h:realtek:rtl8711am:-:*:*:*:*:*:*:*
cpe:2.3:o:realtek:rtl8195am_firmware:*:*:*:*:*:*:*:* 2.0.6 (excluding)
cpe:2.3:h:realtek:rtl8195am:-:*:*:*:*:*:*:*
cpe:2.3:o:realtek:rtl8710af_firmware:*:*:*:*:*:*:*:* 2.0.6 (excluding)
cpe:2.3:h:realtek:rtl8710af:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools