# CVE-2019-5266: Denial of service in Share function P30

> Attackers can disable the Huawei Share function on P30 smartphones by sending crafted packets due to insufficient input validation.

- **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:** 23 Dec 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-832g-5px4-fqqf

## What is CVE-2019-5266?

CVE-2019-5266 is a high-severity denial of service vulnerability in Huawei Share function P30, published on 23 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Huawei Share function in P30 9.1.0.193(C00E190R2P1) smartphone has an insufficient input validation vulnerability. Attackers can exploit this vulnerability by sending crafted packets to the affected device. Successful exploit may cause the function will be disabled.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2019-5266?

It affects 1 product.


Products: Huawei P30 Firmware.

## How do I fix CVE-2019-5266?

No fix has been published for CVE-2019-5266 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-5266 being exploited?

There is no known exploitation of CVE-2019-5266 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Share function P30

- [CVE-2020-1800](https://insights.sbomify.com/CVE-2020-1800/): Missing authorization in HUAWEI P30 (high 7.8)
- [CVE-2020-1812](https://insights.sbomify.com/CVE-2020-1812/): Auth bypass in HUAWEI P30 (high 7.8)
- [CVE-2019-5287](https://insights.sbomify.com/CVE-2019-5287/): Integer overflow in P30 (high 7.8)
- [CVE-2019-5288](https://insights.sbomify.com/CVE-2019-5288/): Integer overflow in P30 (high 7.8)
- [CVE-2021-22331](https://insights.sbomify.com/CVE-2021-22331/): Cross-site scripting in HUAWEI P30 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-5266 and fix it if it is affected.

What it is: CVE-2019-5266 is a high-severity denial of service vulnerability in Huawei Share function P30, published on 23 Dec 2019. 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-2019-5266 in the wild and no public exploit code.

Affected product: Huawei Share function P30. 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-2019-5266/ (Markdown: https://insights.sbomify.com/CVE-2019-5266/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-5266
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-5266
- OSV: https://osv.dev/vulnerability/CVE-2019-5266

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-5266/
Summaries are generated and may contain mistakes; the official description above is the record.