# CVE-2023-43542: Buffer Copy Without Checking Size of Input in Trusted Execution Environment

> An attacker can exploit a buffer overflow in the Trusted Execution Environment to execute arbitrary code or escalate privileges on Qualcomm Snapdragon devices.

- **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:** 3 Jun 2024
- **Updated:** 13 Aug 2024
- **Also known as:** GHSA-p555-252p-vf5r

## What is CVE-2023-43542?

CVE-2023-43542 is a high-severity memory corruption vulnerability in Qualcomm Aqt1000 Firmware, published on 3 Jun 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Memory corruption while copying a keyblob`s material when the key material`s size is not accurately checked.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2023-43542?

It affects 209 products.


Products: Qualcomm 9205 Lte Modem Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar8031 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Fastconnect 6200 Firmware, Qualcomm Fastconnect 6700 Firmware, Qualcomm Fastconnect 6800 Firmware, Qualcomm Fastconnect 6900 Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Flight Rb5 5g Firmware, Qualcomm Fsm10056 Firmware, Qualcomm Qam8255p Firmware, Qualcomm Qam8295p Firmware, Qualcomm Qam8650p Firmware, Qualcomm Qam8775p Firmware, Qualcomm Qca4004 Firmware, Qualcomm Qca6174a Firmware, Qualcomm Qca6310 Firmware and 189 more.

## How do I fix CVE-2023-43542?

No fix has been published for CVE-2023-43542 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-43542 being exploited?

There is no known exploitation of CVE-2023-43542 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Aqt1000 Firmware

- [CVE-2023-33032](https://insights.sbomify.com/CVE-2023-33032/): Integer Overflow or Wraparound in TZ Secure OS (critical 9.3)
- [CVE-2022-40505](https://insights.sbomify.com/CVE-2022-40505/): Buffer over-read in Modem (high 8.2)
- [CVE-2022-33287](https://insights.sbomify.com/CVE-2022-33287/): Buffer over-read in Modem (high 8.2)
- [CVE-2022-33291](https://insights.sbomify.com/CVE-2022-33291/): Buffer over-read in Modem (high 8.2)
- [CVE-2024-21465](https://insights.sbomify.com/CVE-2024-21465/): Buffer Over-read in Trusted Execution Environment (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-43542 and fix it if it is affected.

What it is: CVE-2023-43542 is a high-severity memory corruption vulnerability in Qualcomm Aqt1000 Firmware, published on 3 Jun 2024. 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-2023-43542 in the wild and no public exploit code.

Affected product: Qualcomm Aqt1000 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-2023-43542/ (Markdown: https://insights.sbomify.com/CVE-2023-43542/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-43542
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-43542
- OSV: https://osv.dev/vulnerability/CVE-2023-43542

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-43542/
Summaries are generated and may contain mistakes; the official description above is the record.