Cyber Resilience

CVE-2024-0300

MediumPublic PoC

Published: 08 January 2024

Published
08 January 2024
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0093 76.6th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-0300 is a medium-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Byzoro Smart S150 Firmware. Its CVSS base score is 6.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 23.4% 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

A vulnerability was found in Byzoro Smart S150 Management Platform up to 20240101. It has been rated as critical. Affected by this issue is some unknown functionality of the file /useratte/userattestation.php of the component HTTP POST Request Handler. The manipulation…

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of the argument web_img leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-249866 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
T1505.003 Web Shell Persistence
Adversaries may backdoor web servers with web shells to establish persistent access to systems.
Why these techniques?

Unrestricted file upload vulnerability in public-facing web application (/useratte/userattestation.php) enables exploitation of public-facing application (T1190) and facilitates deployment of web shells (T1100).

Affected Assets

byzoro
smart s150 firmware
≤ 2024-01-01

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-434

Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.

addresses: CWE-434

Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.

addresses: CWE-434

Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.

addresses: CWE-434

Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.

References