9.8Crítica
KEV
CVE-2021-20090Arcadyan Buffalo Firmware Path Traversal Vulnerability
Explotación conocida — Arcadyan Buffalo Firmware Path Traversal Vulnerability
CISA confirmó el 03.11.2021 que esta vulnerabilidad se usa en ataques reales. Plazo para las agencias federales de EE. UU.: 17.11.2021.
Acción requerida: Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-20090
Descripción
A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.
Debilidad (CWE):
CWE-22
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
Productos y versiones afectados
| Fabricante | Producto | Versiones | |
|---|---|---|---|
| buffalo | wsr-2533dhp3-bk firmware | ≤ 1.24 | |
| buffalo | wsr-2533dhpl2-bk firmware | ≤ 1.02 | |
| — | Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3 | WSR-2533DHPL2 <=1.02, WSR-2533DHP3 <= 1.24 |
Referencias y parches
- https://www.tenable.com/security/research/tra-2021-13 ExploitThird Party Advisory
- VU#914124 third-party-advisoryThird Party AdvisoryUS Government Resource
- https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/ ExploitThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20090 US Government Resource
Coincidencias CPE (NVD) (2)
cpe:2.3:o:buffalo:wsr-2533dhpl2-bk_firmware:*:*:*:*:*:*:*:*≤ 1.02cpe:2.3:o:buffalo:wsr-2533dhp3-bk_firmware:*:*:*:*:*:*:*:*≤ 1.24