Siemens SCALANCE FragAttacks (CVE-2020-26143)

medium Tenable OT Security Plugin ID 501017

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An issue was discovered in the ALFA Windows 10 driver 1030.36.604 for AWUS036ACH. The WEP, WPA, WPA2, and WPA3 implementations accept fragmented plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: Medium

ID: 501017

Version: 1.3

Type: remote

Family: Tenable.ot

Published: 4/11/2023

Updated: 10/19/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2020-26143

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:siemens:scalance_w721-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w722-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w734-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w738-1_firmware:-::~~~~m12~, cpe:/o:siemens:scalance_w748-1_firmware:-::~~~~m12~, cpe:/o:siemens:scalance_w748-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w761-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w774-1_firmware:-::~~~~m12_eec~, cpe:/o:siemens:scalance_w774-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w778-1_firmware:-::~~~~m12_eec~, cpe:/o:siemens:scalance_w778-1_firmware:-::~~~~m12~, cpe:/o:siemens:scalance_w786-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w786-2_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w786-2_firmware:-::~~~~sfp~, cpe:/o:siemens:scalance_w786-2ia_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w788-1_firmware:-::~~~~m12~, cpe:/o:siemens:scalance_w788-1_firmware:-::~~~~rj45~, cpe:/o:siemens:scalance_w788-2_firmware:-::~~~~m12_eec~, cpe:/o:siemens:scalance_w788-2_firmware:-::~~~~m12~, cpe:/o:siemens:scalance_w788-2_firmware:-::~~~~rj45~

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 5/11/2021

Vulnerability Publication Date: 5/11/2021

Reference Information

CVE: CVE-2020-26143

CWE: 20

Detections

Analytics