# CVE-2021-38557: raspap-webgui in RaspAP 2.6.6 allows attackers to execute commands as root because of the insecure sudoers permissions.

> Attackers can escalate privileges to root by overwriting a script executable by the web server user due to insecure sudoers permissions.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Aug 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-536p-4pcj-5mr9

## What is CVE-2021-38557?

CVE-2021-38557 is a high-severity vulnerability in n/a, published on 24 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

raspap-webgui in RaspAP 2.6.6 allows attackers to execute commands as root because of the insecure sudoers permissions. The www-data account can execute /etc/raspap/hostapd/enablelog.sh as root with no password; however, the www-data account can also overwrite /etc/raspap/hostapd/enablelog.sh with any executable content.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2021-38557?

2 open source packages ship an affected version, including billz/raspap-webgui. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `billz/raspap-webgui` | Packagist | All versions to 2.6.6 | None |
| `billz/raspap-webgui` | Packagist | All versions to 2.6.6 | None |

Products: Raspap Raspap.

## How do I fix CVE-2021-38557?

No fix has been published for CVE-2021-38557 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-38557 being exploited?

There is no known exploitation of CVE-2021-38557 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-39986](https://insights.sbomify.com/CVE-2022-39986/): RaspAP Command Injection vulnerability (critical 9.8)
- [CVE-2021-33357](https://insights.sbomify.com/CVE-2021-33357/): Command injection in n/a (critical 9.8)
- [CVE-2022-39987](https://insights.sbomify.com/CVE-2022-39987/): RaspAP Command Injection vulnerability (high 8.8)
- [CVE-2023-30260](https://insights.sbomify.com/CVE-2023-30260/): RaspAP raspap-webgui Command Injection vulnerability (high 8.8)
- [CVE-2021-38556](https://insights.sbomify.com/CVE-2021-38556/): Command Injection in RaspAP 2.6.6 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-38557 and fix it if it is affected.

What it is: CVE-2021-38557 is a high-severity vulnerability in n/a, published on 24 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-38557 in the wild and no public exploit code.

Affected packages and fixed versions:
- billz/raspap-webgui (Packagist): affected all versions up to 2.6.6; no fix listed
- billz/raspap-webgui (Packagist): affected all versions up to 2.6.6; no fix listed

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-2021-38557/ (Markdown: https://insights.sbomify.com/CVE-2021-38557/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-38557
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-38557
- OSV: https://osv.dev/vulnerability/CVE-2021-38557

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-38557/
Summaries are generated and may contain mistakes; the official description above is the record.