# CVE-2023-33100: Improper input validation in Multi-Mode Call Processor

> An attacker can cause a transient denial of service in Qualcomm Snapdragon devices by sending a malformed DL NAS Transport message with an undefined message ID.

- **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:** No
- **Published:** 1 Apr 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-mh84-m264-f3jf

## What is CVE-2023-33100?

CVE-2023-33100 is a high-severity denial of service vulnerability in Qualcomm Ar8035 Firmware, published on 1 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Transient DOS while processing DL NAS Transport message when message ID is not defined in the 3GPP specification.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2023-33100?

It affects 50 products.


Products: Qualcomm Ar8035 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Qca6174a Firmware, Qualcomm Qca6584au Firmware, Qualcomm Qca6698aq Firmware, Qualcomm Qca8081 Firmware, Qualcomm Qca8337 Firmware, Qualcomm Qcc710 Firmware, Qualcomm Qcm4490 Firmware, Qualcomm Qcm8550 Firmware, Qualcomm Qcn6024 Firmware, Qualcomm Qcn6224 Firmware, Qualcomm Qcn6274 Firmware, Qualcomm Qcn9024 Firmware, Qualcomm Qcs4490 Firmware, Qualcomm Qcs8550 Firmware, Qualcomm Qep8111 Firmware, Qualcomm Qfw7114 Firmware and 30 more.

## How do I fix CVE-2023-33100?

No fix has been published for CVE-2023-33100 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-33100 being exploited?

There is no known exploitation of CVE-2023-33100 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Ar8035 Firmware

- [CVE-2023-33106](https://insights.sbomify.com/CVE-2023-33106/): Qualcomm Multiple Chipsets Use of Out-of-Range Pointer Offset (high 8.4, exploited in the wild)
- [CVE-2024-45569](https://insights.sbomify.com/CVE-2024-45569/): Improper Validation of Array Index in WLAN Host Communication (critical 9.8)
- [CVE-2024-21473](https://insights.sbomify.com/CVE-2024-21473/): Improper Input Validation in WIN SON (critical 9.8)
- [CVE-2023-28582](https://insights.sbomify.com/CVE-2023-28582/): Buffer Copy Without Checking Size of Input in Data Modem (critical 9.8)
- [CVE-2023-43552](https://insights.sbomify.com/CVE-2023-43552/): Use After Free in WLAN Host Communication (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-33100 and fix it if it is affected.

What it is: CVE-2023-33100 is a high-severity denial of service vulnerability in Qualcomm Ar8035 Firmware, published on 1 Apr 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-2023-33100 in the wild and no public exploit code.

Affected product: Qualcomm Ar8035 Firmware. 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-2023-33100/ (Markdown: https://insights.sbomify.com/CVE-2023-33100/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-33100
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-33100
- OSV: https://osv.dev/vulnerability/CVE-2023-33100

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-33100/
Summaries are generated and may contain mistakes; the official description above is the record.