# CVE-2024-21824: Auth bypass in Multiple printers and scanners

> Network-adjacent attackers can impersonate administrative users on Brother, Fujifilm, Ricoh, and Toshiba printers and scanners due to improper authentication.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Mar 2024
- **Updated:** 7 Nov 2024
- **Also known as:** GHSA-xhm5-2j4f-4x4p

## What is CVE-2024-21824?

CVE-2024-21824 is a medium-severity authentication bypass vulnerability in BROTHER INDUSTRIES, LTD. Multiple printers and scanners, published on 18 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper authentication vulnerability in exists in multiple printers and scanners which implement Web Based Management provided by BROTHER INDUSTRIES, LTD. If this vulnerability is exploited, a network-adjacent user who can access the product may impersonate an administrative user. As for the details of affected product names, model numbers, and versions, refer to the information provided by the respective vendors listed under [References].

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2024-21824?


## How do I fix CVE-2024-21824?

No fix has been published for CVE-2024-21824 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-21824 being exploited?

There is no known exploitation of CVE-2024-21824 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-21824 and fix it if it is affected.

What it is: CVE-2024-21824 is a medium-severity authentication bypass vulnerability in BROTHER INDUSTRIES, LTD. Multiple printers and scanners, published on 18 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-21824 in the wild and no public exploit code.

Affected product: BROTHER INDUSTRIES, LTD. Multiple printers and scanners. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-21824/ (Markdown: https://insights.sbomify.com/CVE-2024-21824/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-21824
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-21824
- OSV: https://osv.dev/vulnerability/CVE-2024-21824

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-21824/
Summaries are generated and may contain mistakes; the official description above is the record.