Buffalo Routers Multiple Vulnerabilities (TRA-2021-13)

critical Nessus Plugin ID 152198

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Synopsis

The remote device is affected by multiple vulnerabilities.

Description

Nessus was able to determine that the remote Buffalo device is affected by multiple vulnerabilities:
- A path traversal vulnerability in the web interfaces of certain Buffalo router models could allow unauthenticated remote attackers to bypass authentication. (CVE-2021-20090)

- The web interfaces of certain Buffalo router models do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution. (CVE-2021-20091)

- The web interfaces of certain Buffalo router models do not properly restrict access to sensitive information from an unauthorized actor. (CVE-2021-20092)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Vendor has released fixes for certain models. Contact vendor for more information.

See Also

https://www.tenable.com/security/research/tra-2021-13

Plugin Details

Severity: Critical

ID: 152198

File Name: buffalo_wsr_cve_2021_20090.nasl

Version: 1.2

Type: remote

Family: Misc.

Published: 8/4/2021

Updated: 8/10/2021

Dependencies: buffalo_www_detect.nbin

Risk Information

CVSS Score Source: CVE-2021-20090

VPR

Risk Factor: Critical

Score: 9.5

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: x-cpe:/a:buffalo:buffalo

Required KB Items: installed_sw/Buffalo WWW

Exploit Ease: No known exploits are available

Patch Publication Date: 4/26/2021

Vulnerability Publication Date: 4/26/2021

Reference Information

CVE: CVE-2021-20090, CVE-2021-20091, CVE-2021-20092