CVE-2024-57473

Critical

Published: 14 January 2025

Published

14 January 2025

Modified

27 May 2025

KEV Added

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Patch

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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0033 56.2th percentile

Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-57473 is a critical-severity Classic Buffer Overflow (CWE-120) vulnerability in H3C N12 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 43.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly requires length and format validation for inputs like MAC addresses in the web interface to prevent buffer overflows from crafted POST requests to /bin/webs.

SI-2 Flaw Remediation good match

prevent

Mandates timely application of vendor patches to remediate the specific buffer overflow vulnerability in H3C N12 V100R005.

SC-7 Boundary Protection partial match

preventdetect

Enforces boundary protections such as web application firewalls to inspect and block malformed POST requests targeting the vulnerable /bin/webs endpoint.

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.

attack.mitre.org →

Why these techniques?

Buffer overflow in unauthenticated web interface endpoint directly enables remote exploitation of a public-facing application for RCE or DoS.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

H3C N12 V100R005 contains a buffer overflow vulnerability due to the lack of length verification in the mac address editing function. Attackers who successfully exploit this vulnerability can cause the remote target device to crash or execute arbitrary commands by…

sending a POST request to /bin/webs.

Deeper analysisAI

CVE-2024-57473, published on 2025-01-14, is a buffer overflow vulnerability (CWE-120) in H3C N12 V100R005 due to insufficient length verification in the MAC address editing function. The flaw affects the web interface component, specifically accessible via the /bin/webs endpoint.

Attackers can exploit this vulnerability remotely over the network with no required privileges, authentication, or user interaction, as indicated by its CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). By sending a specially crafted POST request to /bin/webs, successful exploitation allows attackers to crash the target device or execute arbitrary commands, potentially leading to full compromise.

Vendor advisories and related resources are available at http://h3c.com, with additional technical details, including a proof-of-concept, provided at https://gist.github.com/XiaoCurry/85ae28b7437d24d9c531c970612d3bd8. Security practitioners should review these for patch availability and mitigation guidance.