# CVE-2019-11849: ALEOS AT API Stack Overflow

> A stack overflow in ALEOS AT command APIs allows attackers to execute arbitrary code on affected IoT devices.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Aug 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-pj6q-rg44-52vw

## What is CVE-2019-11849?

CVE-2019-11849 is a medium-severity memory corruption vulnerability in n/a, published on 21 Aug 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A stack overflow vulnerabiltity exists in the AT command APIs of ALEOS before 4.11.0. The vulnerability may allow code execution.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2019-11849?

It affects 1 product.


Products: Sierrawireless Aleos.

## How do I fix CVE-2019-11849?

No fix has been published for CVE-2019-11849 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-11849 being exploited?

There is no known exploitation of CVE-2019-11849 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-2019-11849 and fix it if it is affected.

What it is: CVE-2019-11849 is a medium-severity memory corruption vulnerability in n/a, published on 21 Aug 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-11849 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-2019-11849/ (Markdown: https://insights.sbomify.com/CVE-2019-11849/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-11849
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-11849
- OSV: https://osv.dev/vulnerability/CVE-2019-11849

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-11849/
Summaries are generated and may contain mistakes; the official description above is the record.