# CVE-2024-5339: Ruijie RG-UAC online_check.php os command injection

> Remote attackers can execute arbitrary OS commands via the peernode argument in online_check.php, requiring immediate attention from network administrators.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 May 2024
- **Updated:** 1 Aug 2024

## What is CVE-2024-5339?

CVE-2024-5339 is a medium-severity command injection vulnerability in Ruijie RG-UAC, published on 25 May 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability was found in Ruijie RG-UAC up to 20240516. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file /view/vpn/autovpn/online_check.php. The manipulation of the argument peernode leads to os command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-266245 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2024-5339?

It affects 27 products.


Products: Ruijie Rg-Uac 6000-Cc Firmware, Ruijie Rg-Uac 6000-E10 Firmware, Ruijie Rg-Uac 6000-E10c Firmware, Ruijie Rg-Uac 6000-E20 Firmware, Ruijie Rg-Uac 6000-E20c Firmware, Ruijie Rg-Uac 6000-E20m Firmware, Ruijie Rg-Uac 6000-E50 Firmware, Ruijie Rg-Uac 6000-E50c Firmware, Ruijie Rg-Uac 6000-E50m Firmware, Ruijie Rg-Uac 6000-Ea Firmware, Ruijie Rg-Uac 6000-Ei Firmware, Ruijie Rg-Uac 6000-Isg02 Firmware, Ruijie Rg-Uac 6000-Isg10 Firmware, Ruijie Rg-Uac 6000-Isg200 Firmware, Ruijie Rg-Uac 6000-Isg40 Firmware, Ruijie Rg-Uac 6000-Si Firmware, Ruijie Rg-Uac 6000-U3100 Firmware, Ruijie Rg-Uac 6000-U3210 Firmware, Ruijie Rg-Uac 6000-X100 Firmware, Ruijie Rg-Uac 6000-X100s Firmware and 7 more.

## How do I fix CVE-2024-5339?

No fix has been published for CVE-2024-5339 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-5339 being exploited?

There is no known exploitation of CVE-2024-5339 in the wild and no public exploit code.

## Other vulnerabilities in Ruijie RG-UAC

- [CVE-2024-4813](https://insights.sbomify.com/CVE-2024-4813/): Ruijie RG-UAC interface_commit.php os command injection (medium 5.3)
- [CVE-2024-4814](https://insights.sbomify.com/CVE-2024-4814/): Ruijie RG-UAC static_route_edit_commit.php os command injection (medium 5.3)
- [CVE-2024-4815](https://insights.sbomify.com/CVE-2024-4815/): Ruijie RG-UAC detail.php os command injection (medium 5.3)
- [CVE-2024-4816](https://insights.sbomify.com/CVE-2024-4816/): Ruijie RG-UAC gre_add_commit.php os command injection (medium 5.3)
- [CVE-2024-5336](https://insights.sbomify.com/CVE-2024-5336/): Ruijie RG-UAC vlan_add_commit.php addVlan os command injection (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-5339 and fix it if it is affected.

What it is: CVE-2024-5339 is a medium-severity command injection vulnerability in Ruijie RG-UAC, published on 25 May 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-5339 in the wild and no public exploit code.

Affected product: Ruijie RG-UAC. 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-2024-5339/ (Markdown: https://insights.sbomify.com/CVE-2024-5339/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-5339
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-5339
- OSV: https://osv.dev/vulnerability/CVE-2024-5339

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-5339/
Summaries are generated and may contain mistakes; the official description above is the record.