# CVE-2023-38321: Null dereference in n/a

> Remote attackers can crash the OpenNDS daemon and disrupt Captive Portal services by sending a malformed GET request to Sierra Wireless ALEOS devices.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 25 Dec 2023
- **Updated:** 2 Aug 2024
- **Also known as:** DEBIAN-CVE-2023-38321, GHSA-7246-m99m-q4pq

## What is CVE-2023-38321?

CVE-2023-38321 is a high-severity vulnerability in n/a, published on 25 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

OpenNDS, as used in Sierra Wireless ALEOS before 4.17.0.12 and other products, allows remote attackers to cause a denial of service (NULL pointer dereference, daemon crash, and Captive Portal outage) via a GET request to /opennds_auth/ that lacks a custom query string parameter and client-token.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2023-38321?

It affects 1 product.


Products: Sierrawireless Aleos.

## How do I fix CVE-2023-38321?

Upgrade to a fixed version.

## Is CVE-2023-38321 being exploited?

There is no known exploitation of CVE-2023-38321 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-4063](https://insights.sbomify.com/CVE-2018-4063/): Sierra Wireless AirLink ALEOS Unrestricted Upload of File with Dangerous Type (high 8.8, exploited in the wild)
- [CVE-2015-2897](https://insights.sbomify.com/CVE-2015-2897/): Hardcoded credentials in n/a (critical 10.0)
- [CVE-2019-11851](https://insights.sbomify.com/CVE-2019-11851/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-10251](https://insights.sbomify.com/CVE-2018-10251/): Missing authorization in n/a (critical 9.8)
- [CVE-2019-11857](https://insights.sbomify.com/CVE-2019-11857/): ALEOS AceManager Information Disclosure (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-38321 and fix it if it is affected.

What it is: CVE-2023-38321 is a high-severity vulnerability in n/a, published on 25 Dec 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-2023-38321 in the wild and no public exploit code.

Affected product: n/a. 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-2023-38321/ (Markdown: https://insights.sbomify.com/CVE-2023-38321/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-38321
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-38321
- OSV: https://osv.dev/vulnerability/CVE-2023-38321

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-38321/
Summaries are generated and may contain mistakes; the official description above is the record.