# CVE-2023-34156: Denial of service in EMUI

> Attackers can deny services on HarmonyOS products by exploiting early fingerprint APIs, requiring users to apply vendor patches.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Jun 2023
- **Updated:** 17 Dec 2024
- **Also known as:** GHSA-x86v-p8fr-6c2m

## What is CVE-2023-34156?

CVE-2023-34156 is a medium-severity denial of service vulnerability in Huawei Emui, published on 19 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vulnerability of services denied by early fingerprint APIs on HarmonyOS products.Successful exploitation of this vulnerability may cause services to be denied.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2023-34156?

It affects 1 product.


Products: Huawei Emui.

## How do I fix CVE-2023-34156?

No fix has been published for CVE-2023-34156 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-34156 being exploited?

There is no known exploitation of CVE-2023-34156 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Emui

- [CVE-2023-52370](https://insights.sbomify.com/CVE-2023-52370/): Memory corruption in EMUI (critical 9.8)
- [CVE-2023-52378](https://insights.sbomify.com/CVE-2023-52378/): Business logic in EMUI (critical 9.8)
- [CVE-2023-52381](https://insights.sbomify.com/CVE-2023-52381/): Code injection in EMUI (critical 9.8)
- [CVE-2023-52103](https://insights.sbomify.com/CVE-2023-52103/): Memory corruption in EMUI (critical 9.8)
- [CVE-2023-46773](https://insights.sbomify.com/CVE-2023-46773/): Privilege escalation in EMUI (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34156 and fix it if it is affected.

What it is: CVE-2023-34156 is a medium-severity denial of service vulnerability in Huawei Emui, published on 19 Jun 2023. 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-2023-34156 in the wild and no public exploit code.

Affected product: Huawei Emui. 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-2023-34156/ (Markdown: https://insights.sbomify.com/CVE-2023-34156/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34156
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34156
- OSV: https://osv.dev/vulnerability/CVE-2023-34156

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34156/
Summaries are generated and may contain mistakes; the official description above is the record.