# CVE-2024-1621: uniFLOW Online device registration susceptible to compromise

> Attackers can register against genuine users via compromised email login flows, gaining unauthorized access and capabilities in uniFLOW Online.

- **Severity:** High 8.3 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Sep 2024
- **Updated:** 3 Sep 2024
- **Also known as:** GHSA-fvjr-4pf9-7pjq

## What is CVE-2024-1621?

CVE-2024-1621 is a high-severity authentication bypass vulnerability in NT-ware uniFLOW Online, published on 2 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The registration process of uniFLOW Online (NT-ware product) apps, prior to and including version 2024.1.0, can be compromised when email login is enabled on the tenant. Those tenants utilising email login in combination with Microsoft Safe Links or similar are impacted. This vulnerability may allow the attacker to register themselves against a genuine user in the system and allow malicious users with similar access and capabilities via the app to the existing genuine user.

Weakness: CWE-940 (Improper Verification of Source of a Communication Channel)

## Which versions are affected by CVE-2024-1621?

It affects 3 products.


Products: Nt-Ware Uniflow Online, Nt-Ware Uniflow Online Print \& Scan, Nt-Ware Uniflow Smartclient.

## How do I fix CVE-2024-1621?

No fix has been published for CVE-2024-1621 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-1621 being exploited?

There is no known exploitation of CVE-2024-1621 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-1621 and fix it if it is affected.

What it is: CVE-2024-1621 is a high-severity authentication bypass vulnerability in NT-ware uniFLOW Online, published on 2 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-1621 in the wild and no public exploit code.

Affected product: NT-ware uniFLOW Online. 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-2024-1621/ (Markdown: https://insights.sbomify.com/CVE-2024-1621/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-1621
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-1621
- OSV: https://osv.dev/vulnerability/CVE-2024-1621

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-1621/
Summaries are generated and may contain mistakes; the official description above is the record.