# CVE-2020-9117: Memory corruption in HUAWEI nova 4;SydneyM-AL00

> Attackers with specific permissions can cause information leakage or arbitrary code execution via malformed packets due to out-of-bounds read and write flaws.

- **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:** 1 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-xvxg-wp8f-g8h4

## What is CVE-2020-9117?

CVE-2020-9117 is a high-severity memory corruption vulnerability in HUAWEI nova 4;SydneyM-AL00, published on 1 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

HUAWEI nova 4 versions earlier than 10.0.0.165(C01E34R2P4) and SydneyM-AL00 versions earlier than 10.0.0.165(C00E66R1P5) have an out-of-bounds read and write vulnerability. An attacker with specific permissions crafts malformed packet with specific parameter and sends the packet to the affected products. Due to insufficient validation of packet, which may be exploited to cause the information leakage or arbitrary code execution.

Weakness: CWE-787 (Out-of-bounds Write), CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2020-9117?

It affects 2 products.


Products: Huawei Nova 4 Firmware, Huawei Sydneym-Al00 Firmware.

## How do I fix CVE-2020-9117?

No fix has been published for CVE-2020-9117 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9117 being exploited?

There is no known exploitation of CVE-2020-9117 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9117 and fix it if it is affected.

What it is: CVE-2020-9117 is a high-severity memory corruption vulnerability in HUAWEI nova 4;SydneyM-AL00, published on 1 Dec 2020. 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-2020-9117 in the wild and no public exploit code.

Affected product: HUAWEI nova 4;SydneyM-AL00. 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-2020-9117/ (Markdown: https://insights.sbomify.com/CVE-2020-9117/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9117
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9117
- OSV: https://osv.dev/vulnerability/CVE-2020-9117

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-9117/
Summaries are generated and may contain mistakes; the official description above is the record.