# CVE-2024-27099: Azure IoT Platform Device SDK Double Free Vulnerability

> A double free vulnerability in the Azure IoT Platform Device SDK allows attackers to execute arbitrary code via malformed AMQP messages.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 27 Feb 2024
- **Updated:** 2 Aug 2024
- **Also known as:** AZL-35447, AZL-35471, DEBIAN-CVE-2024-27099, GHSA-6rh4-fj44-v4jj, SUSE-SU-2024:0947-1, UBUNTU-CVE-2024-27099, openSUSE-SU-2024:13729-1

## What is CVE-2024-27099?

CVE-2024-27099 is a critical use after free vulnerability in azure-uamqp-c, published on 27 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The uAMQP is a C library for AMQP 1.0 communication to Azure Cloud Services. When processing an incorrect `AMQP_VALUE` failed state, may cause a double free problem. This may cause a RCE. Update submodule with commit 2ca42b6e4e098af2d17e487814a91d05f6ae4987.

Weakness: CWE-415 (Double Free)

## Which versions are affected by CVE-2024-27099?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `python-uamqp` | SUSE:Linux Enterprise Module for Public Cloud 15 SP2 | All versions | 1.5.3-150100.4.18.1 |
| `python-uamqp` | SUSE:Linux Enterprise Module for Public Cloud 15 SP3 | All versions | 1.5.3-150100.4.18.1 |
| `python-uamqp` | SUSE:Linux Enterprise Module for Public Cloud 15 SP4 | All versions | 1.5.3-150100.4.18.1 |
| `python-uamqp` | SUSE:Linux Enterprise Module for Public Cloud 15 SP5 | All versions | 1.5.3-150100.4.18.1 |
| `python-uamqp` | openSUSE:Leap 15.5 | All versions | 1.5.3-150100.4.18.1 |

Products: Microsoft Azure Uamqp.

## How do I fix CVE-2024-27099?

Apply the vendor's patch.

## Is CVE-2024-27099 being exploited?

There is no known exploitation of CVE-2024-27099 in the wild and no public exploit code.

## Other vulnerabilities in azure-uamqp-c

- [CVE-2024-25110](https://insights.sbomify.com/CVE-2024-25110/): Azure IoT Platform Device SDK Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2024-21646](https://insights.sbomify.com/CVE-2024-21646/): Azure IoT Platform Device SDK Remote Code Execution Vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-27099 and fix it if it is affected.

What it is: CVE-2024-27099 is a critical use after free vulnerability in azure-uamqp-c, published on 27 Feb 2024. 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-2024-27099 in the wild and no public exploit code.

Affected product: azure-uamqp-c. 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-2024-27099/ (Markdown: https://insights.sbomify.com/CVE-2024-27099/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-27099
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-27099
- OSV: https://osv.dev/vulnerability/CVE-2024-27099

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-27099/
Summaries are generated and may contain mistakes; the official description above is the record.