# CVE-2023-21649: Buffer Copy Without Checking Size of Input (`Classic Buffer Overflow`) in WLAN

> A buffer overflow in Qualcomm WLAN drivers allows attackers to execute arbitrary code or escalate privileges on Android devices.

- **Severity:** Medium 6.7 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/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:** Not needed
- **Fix available:** Yes
- **Published:** 8 Aug 2023
- **Updated:** 2 Aug 2024
- **Also known as:** 3283695, A-268066858, GHSA-5p9w-p3rg-mcf8, PUB-A-268066858

## What is CVE-2023-21649?

CVE-2023-21649 is a medium-severity memory corruption vulnerability in Qualcomm Apq8096au Firmware, published on 8 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory corruption in WLAN while running doDriverCmd for an unspecific command.

Weakness: CWE-787 (Out-of-bounds Write), CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2023-21649?

It affects 65 products.


Products: Qualcomm Apq8096au Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Mdm9628 Firmware, Qualcomm Mdm9650 Firmware, Qualcomm Qca6390 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6420 Firmware, Qualcomm Qca6421 Firmware, Qualcomm Qca6426 Firmware, Qualcomm Qca6430 Firmware, Qualcomm Qca6431 Firmware, Qualcomm Qca6436 Firmware, Qualcomm Qca6554a Firmware, Qualcomm Qca6564a Firmware, Qualcomm Qca6564au Firmware, Qualcomm Qca6574 Firmware, Qualcomm Qca6574a Firmware, Qualcomm Qca6574au Firmware, Qualcomm Qca6584au Firmware, Qualcomm Qca6595 Firmware and 45 more.

## How do I fix CVE-2023-21649?

Apply the vendor's patch.

## Is CVE-2023-21649 being exploited?

There is no known exploitation of CVE-2023-21649 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Apq8096au Firmware

- [CVE-2019-14045](https://insights.sbomify.com/CVE-2019-14045/): Memory corruption in Snapdragon Auto, Snapdragon Consumer IOT, Snapdragon Mobile (critical 9.8)
- [CVE-2017-14911](https://insights.sbomify.com/CVE-2017-14911/): Auth bypass in Snapdragon IoT, Snapdragon Mobile, Snapdragon Automobile (critical 9.8)
- [CVE-2020-11126](https://insights.sbomify.com/CVE-2020-11126/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wired Infrastructure and Networking (critical 9.1)
- [CVE-2022-33243](https://insights.sbomify.com/CVE-2022-33243/): Improper access control in Qualcomm IPC (high 8.4)
- [CVE-2022-22063](https://insights.sbomify.com/CVE-2022-22063/): Memory corruption in Core (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-21649 and fix it if it is affected.

What it is: CVE-2023-21649 is a medium-severity memory corruption vulnerability in Qualcomm Apq8096au Firmware, published on 8 Aug 2023. 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-2023-21649 in the wild and no public exploit code.

Affected product: Qualcomm Apq8096au 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-2023-21649/ (Markdown: https://insights.sbomify.com/CVE-2023-21649/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-21649
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-21649
- OSV: https://osv.dev/vulnerability/CVE-2023-21649

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-21649/
Summaries are generated and may contain mistakes; the official description above is the record.