Cyber Resilience

CVE-2020-21884

HighPublic PoC

Published: 09 April 2021

Published
09 April 2021
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0068 72.0th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-21884 is a high-severity CSRF (CWE-352) vulnerability in Indionetworks Unibox U50 Firmware. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 28.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

indionetworks
unibox u50 firmware
2.4
indionetworks
unibox u500 firmware
2.4
indionetworks
unibox u1000 firmware
2.4
indionetworks
unibox u2500 firmware
2.4
indionetworks
unibox u5000 firmware
2.4

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-352

Awareness training educates users on avoiding untrusted links and actions that can be exploited via CSRF.

addresses: CWE-352

Requiring user re-entry of credentials for sensitive actions prevents automated forgery of requests without active user participation.

addresses: CWE-352

Security testing regimens explicitly include checks for missing or ineffective anti-CSRF protections in web applications.

addresses: CWE-352

Detects anomalous request patterns consistent with cross-site request forgery.

References