PT-2021-14304 · Elecom · Elecom Lan Routers

Satoru Nagaoka · Published 2021-12-01 · Updated 2021-12-02 · CVE-2021-20861

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: ELECOM LAN routers versions 1.03 and prior ELECOM LAN routers versions 1.25 and prior ELECOM LAN routers versions 1.52 and prior ELECOM LAN routers versions 2.11 and prior

Description: An improper access control issue in ELECOM LAN routers allows a network-adjacent authenticated attacker to bypass access restrictions and access the management screen of the product via unspecified vectors.

Recommendations: For versions 1.03 and prior, update to a version later than 1.03 to resolve the issue. For versions 1.25 and prior, update to a version later than 1.25 to resolve the issue. For versions 1.52 and prior, update to a version later than 1.52 to resolve the issue. For versions 2.11 and prior, update to a version later than 2.11 to resolve the issue. As a temporary workaround, consider restricting access to the management screen until a patch is available.

Fix

Related Identifiers

CVE-2021-20861

Affected Products

Elecom Lan Routers

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-20861 · Security Note
• https://elecom.co.jp/news/security/20211130-01 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-20861 · Vendor Advisory
• https://jvn.jp/en/jp/JVN88993473/index.html · Note
• https://t.me/cibsecurity/33160 · Telegram Post