Asus DSL-N14U-B1 1.1.2.3_805 Firmware Update Settings_DSL-N14U-B1.trx denial of service

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CVSS Meta Temp Score
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5.5$0-$5k0.00

A vulnerability was found in Asus DSL-N14U-B1 1.1.2.3_805. It has been declared as problematic. This vulnerability affects an unknown functionality of the file Settings_DSL-N14U-B1.trx of the component Firmware Update Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. As an impact it is known to affect availability. CVE summarizes:

An issue was discovered on ASUS DSL-N14U-B1 1.1.2.3_805 devices. An attacker can upload arbitrary file content as a firmware update when the filename Settings_DSL-N14U-B1.trx is used. Once this file is loaded, shutdown measures on a wide range of services are triggered as if it were a real update, resulting in a persistent outage of those services.

The weakness was shared 01/18/2021. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-3166 since 01/18/2021. The attack can only be done within the local network. The successful exploitation needs a single authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat: 🔍
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Recommended: no mitigation known
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0-Day Time: 🔒

Timelineinfoedit

01/18/2021 Advisory disclosed
01/18/2021 +0 days CVE assigned
01/18/2021 +0 days VulDB entry created
02/15/2021 +28 days VulDB last update

Sourcesinfoedit

Vendor: https://www.asus.com/

Advisory: github.com
Status: Not defined

CVE: CVE-2021-3166 (🔒)

Entryinfoedit

Created: 01/18/2021 08:42 AM
Updated: 02/15/2021 03:36 AM
Changes: (18) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore vulnerability_cvss2_nvd_basescore vulnerability_cvss3_nvd_basescore
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