# CVE-2020-35608: Code injection in n/a

> An attacker can execute arbitrary shellcode in the normal world by crafting a specific AF_PACKET socket, compromising the Azure Sphere operating system.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-8j38-79vm-qxr4

## What is CVE-2020-35608?

CVE-2020-35608 is a high-severity code injection vulnerability in n/a, published on 22 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A code execution vulnerability exists in the normal world’s signed code execution functionality of Microsoft Azure Sphere 20.07. A specially crafted AF_PACKET socket can cause a process to create an executable memory mapping with controllable content. An attacker can execute a shellcode that uses the PACKET_MMAP functionality to trigger this vulnerability.

Weakness: CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2020-35608?

It affects 1 product.


Products: Microsoft Azure Sphere.

## How do I fix CVE-2020-35608?

No fix has been published for CVE-2020-35608 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35608 being exploited?

There is no known exploitation of CVE-2020-35608 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-27080](https://insights.sbomify.com/CVE-2021-27080/): Azure Sphere Unsigned Code Execution Vulnerability (critical 9.3)
- [CVE-2021-28460](https://insights.sbomify.com/CVE-2021-28460/): Azure Sphere Unsigned Code Execution Vulnerability (high 8.1)
- [CVE-2020-16970](https://insights.sbomify.com/CVE-2020-16970/): Azure Sphere Unsigned Code Execution Vulnerability (high 8.1)
- [CVE-2021-26429](https://insights.sbomify.com/CVE-2021-26429/): Azure Sphere Elevation of Privilege Vulnerability (high 7.7)
- [CVE-2020-16992](https://insights.sbomify.com/CVE-2020-16992/): Azure Sphere Elevation of Privilege Vulnerability (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35608 and fix it if it is affected.

What it is: CVE-2020-35608 is a high-severity code injection vulnerability in n/a, published on 22 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-35608 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-2020-35608/ (Markdown: https://insights.sbomify.com/CVE-2020-35608/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35608
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35608
- OSV: https://osv.dev/vulnerability/CVE-2020-35608

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-35608/
Summaries are generated and may contain mistakes; the official description above is the record.