Cross-Site Request Forgery (CSRF) in Unibox SMB (CVE-2020-21884)
Summary
Vulnerability in Unibox SMB (CVE-2020-21884). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
Unibox SMB 2.4 and UniBox Enterprise Series 2.4 and UniBox Campus Series 2.4 contain a cross-site request forgery (CSRF) vulnerability in /tools/network-trace, /list_users, /list_byod?usertype=raduser, /dhcp_leases, /go?rid=202 in which a specially crafted HTTP request may reconfigure the device.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2020-21884 has been found in Unibox SMB.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Unibox SMB CVE-2020-21884" on the vendor's site.
CVE-2020-21884 (Unibox SMB) — CWE-352 / CVSS v3 8.8
Attack vector: remote (network-reachable) / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
CSRF (CWE-352) exists in Unibox SMB.
Check the vendor advisory for the affected versions of Unibox SMB.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Unibox SMB を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- exploit s3curityb3ast.github.io
- patch wifi-soft.com
- web cve@mitre.org
- web mail-archive.com