# CVE-2023-4299: Digi RealPort Protocol Use of Password Hash Instead of Password for Authentication

> Attackers can bypass authentication via replay attacks using password hashes, gaining unauthorized access to connected equipment.

- **Severity:** Critical 9.0 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 Aug 2023
- **Updated:** 16 Jan 2025
- **Also known as:** GHSA-6mw3-9jr4-xc73

## What is CVE-2023-4299?

CVE-2023-4299 is a critical authentication bypass vulnerability in Digi 6350-SR, published on 31 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Digi RealPort Protocol is vulnerable to a replay attack that may allow an attacker to bypass authentication to access connected equipment.

Weakness: CWE-836 (Use of Password Hash Instead of Password for Authentication)

## Which versions are affected by CVE-2023-4299?

It affects 20 products.


Products: Digi Cm Firmware, Digi Connect Es Firmware, Digi Connect Sp Firmware, Digi Connectport Lts 8\/16\/32 Firmware, Digi Connectport Ts 8\/16 Firmware, Digi One Ia Firmware, Digi One Iap Firmware, Digi One Sp Firmware, Digi One Sp Ia Firmware, Digi Passport Firmware, Digi Portserver Ts Firmware, Digi Portserver Ts M Mei Firmware, Digi Portserver Ts Mei Firmware, Digi Portserver Ts Mei Hardened Firmware, Digi Portserver Ts P Mei Firmware, Digi Realport, Digi Transport Wr11 Xt Firmware, Digi Wr21 Firmware, Digi Wr31 Firmware, Digi Wr44 R Firmware.

## How do I fix CVE-2023-4299?

No fix has been published for CVE-2023-4299 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4299 being exploited?

There is no known exploitation of CVE-2023-4299 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4299 and fix it if it is affected.

What it is: CVE-2023-4299 is a critical authentication bypass vulnerability in Digi 6350-SR, published on 31 Aug 2023. 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-2023-4299 in the wild and no public exploit code.

Affected product: Digi 6350-SR. 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-2023-4299/ (Markdown: https://insights.sbomify.com/CVE-2023-4299/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4299
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4299
- OSV: https://osv.dev/vulnerability/CVE-2023-4299

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4299/
Summaries are generated and may contain mistakes; the official description above is the record.