PT-2021-14297 · Elecom · Elecom Lan Routers

Taizoh Tsukamoto · Published 2021-12-01 · Updated 2021-12-02 · CVE-2021-20854

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior) ELECOM LAN routers (WRH-733GWH firmware v1.02.9 and prior)

Description: The issue allows a network-adjacent attacker with administrator privilege to execute arbitrary OS commands via unspecified vectors.

Recommendations: For ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior), update to a version later than v1.02.9. For ELECOM LAN routers (WRH-733GWH firmware v1.02.9 and prior), update to a version later than v1.02.9.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2021-20854

Affected Products

Elecom Lan Routers

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-20854 · Security Note
• https://osv.dev/vulnerability/CVE-2021-20854 · Vendor Advisory
• https://elecom.co.jp/news/security/20211130-01 · Vendor Advisory
• https://jvn.jp/en/jp/JVN88993473/index.html · Note
• https://t.me/cibsecurity/33158 · Telegram Post