# CVE-2015-7844: Denial of service in FusionAccess V100R005C10,V100R005C20

> Attackers can cause virtual cloud desktops to become unusable by sending malformed HDP protocol packets to Huawei FusionAccess.

- **Severity:** High 7.5 (`CVSS:3.0/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:** 2 Apr 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-2wrc-8rc6-mc72

## What is CVE-2015-7844?

CVE-2015-7844 is a high-severity denial of service vulnerability in FusionAccess V100R005C10,V100R005C20, published on 2 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Huawei FusionAccess with software V100R005C10,V100R005C20 could allow attackers to craft and send a malformed HDP protocol packet to cause the virtual cloud desktop to be displaying an error and not usable.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2015-7844?

It affects 1 product.


Products: Huawei Fusionaccess.

## How do I fix CVE-2015-7844?

No fix has been published for CVE-2015-7844 yet. Limit exposure of the affected software until one is available.

## Is CVE-2015-7844 being exploited?

There is no known exploitation of CVE-2015-7844 in the wild and no public exploit code.

## Other vulnerabilities in FusionAccess V100R005C10,V100R005C20

- [CVE-2020-9090](https://insights.sbomify.com/CVE-2020-9090/): Missing authorization in FusionAccess (high 7.8)
- [CVE-2020-1825](https://insights.sbomify.com/CVE-2020-1825/): Denial of service in FusionAccess (medium 6.5)
- [CVE-2016-8779](https://insights.sbomify.com/CVE-2016-8779/): Other in FusionAccess FusionAccess V100R005C10, FusionAccess V100R005C20 (medium 6.5)
- [CVE-2016-6839](https://insights.sbomify.com/CVE-2016-6839/): Other in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-7844 and fix it if it is affected.

What it is: CVE-2015-7844 is a high-severity denial of service vulnerability in FusionAccess V100R005C10,V100R005C20, published on 2 Apr 2017. 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-2015-7844 in the wild and no public exploit code.

Affected product: FusionAccess V100R005C10,V100R005C20. 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-2015-7844/ (Markdown: https://insights.sbomify.com/CVE-2015-7844/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-7844
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-7844
- OSV: https://osv.dev/vulnerability/CVE-2015-7844

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From sbomify Insights: https://insights.sbomify.com/CVE-2015-7844/
Summaries are generated and may contain mistakes; the official description above is the record.