# CVE-2023-4415: Ruijie RG-EW1200G login improper authentication

> Remote attackers can bypass authentication on Ruijie RG-EW1200G routers via the login API, gaining unauthorized access.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Aug 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-6f6j-w84g-cp4x

## What is CVE-2023-4415?

CVE-2023-4415 is a high-severity authentication bypass vulnerability in Ruijie RG-EW1200G, published on 18 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in Ruijie RG-EW1200G 07161417 r483. It has been rated as critical. Affected by this issue is some unknown functionality of the file /api/sys/login. The manipulation leads to improper authentication. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-237518 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2023-4415?

It affects 1 product.


Products: Ruijienetworks Rg-Ew1200g Firmware.

## How do I fix CVE-2023-4415?

No fix has been published for CVE-2023-4415 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4415 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4415 exists.

Public exploit code:

- Ruijie RG-EW1200G Router Background - Login Bypass (nuclei): http/cves/2023/CVE-2023-4415.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4415 and fix it if it is affected.

What it is: CVE-2023-4415 is a high-severity authentication bypass vulnerability in Ruijie RG-EW1200G, published on 18 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4415 exists.

Affected product: Ruijie RG-EW1200G. 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-2023-4415/ (Markdown: https://insights.sbomify.com/CVE-2023-4415/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4415
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4415
- OSV: https://osv.dev/vulnerability/CVE-2023-4415

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4415/
Summaries are generated and may contain mistakes; the official description above is the record.