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

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CVE-2019-18990

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
30/09/2020
Last modified:
21/07/2021

Description

A partial authentication bypass vulnerability exists on Realtek RTL8812AR 1.21WW, RTL8196D 1.0.0, RTL8192ER 2.10, and RTL8881AN 1.09 devices. The vulnerability allows sending an unencrypted data frame to a WPA2-protected WLAN router where the packet is routed through the network. If successful, a response is sent back as an encrypted frame, which would allow an attacker to discern information or potentially modify data.

Impact

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

Base Score: 5.40 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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

Base Score 3.x
5.40
Severity 3.x
MEDIUM
Vector 2.0
AV:A/AC:L/Au:N/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.80 MEDIUM
Vector: AV:A/AC:L/Au:N/C:P/I:P/A:N

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0
4.80
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:realtek:rtl8812ar_firmware:1.21ww:*:*:*:*:*:*:*
cpe:2.3:h:realtek:rtl8812ar:-:*:*:*:*:*:*:*
cpe:2.3:o:realtek:rtl8196d_firmware:1.0.0:*:*:*:*:*:*:*
cpe:2.3:h:realtek:rtl8196d:-:*:*:*:*:*:*:*
cpe:2.3:o:realtek:rtl8192er_firmware:2.10:*:*:*:*:*:*:*
cpe:2.3:h:realtek:rtl8192er:-:*:*:*:*:*:*:*
cpe:2.3:o:realtek:rtl8881an_firmware:1.09:*:*:*:*:*:*:*
cpe:2.3:h:realtek:rtl8881an:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools