# CVE-2018-3898: Memory corruption in Yi Technology

> A buffer overflow in the QR code scanning feature allows remote attackers to execute arbitrary code via a specially crafted QR code.

- **Severity:** High 8.3 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Nov 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-g5cj-f5gq-pmgm

## What is CVE-2018-3898?

CVE-2018-3898 is a high-severity memory corruption vulnerability in unknown Yi Technology, published on 2 Nov 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An exploitable code execution vulnerability exists in the QR code scanning functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted QR Code can cause a buffer overflow, resulting in code execution. The trans_info call can overwrite a buffer of size 0x104, which is more than enough to overflow the return address from the ssid_dst field.

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

## Which versions are affected by CVE-2018-3898?

It affects 1 product.


Products: Yitechnology Yi Home Camera Firmware.

## How do I fix CVE-2018-3898?

No fix has been published for CVE-2018-3898 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-3898 being exploited?

There is no known exploitation of CVE-2018-3898 in the wild and no public exploit code.

## Other vulnerabilities in unknown Yi Technology

- [CVE-2018-3892](https://insights.sbomify.com/CVE-2018-3892/): Memory corruption in Yi Technology (critical 9.6)
- [CVE-2018-3934](https://insights.sbomify.com/CVE-2018-3934/): Auth bypass in Yi Technology (critical 9.0)
- [CVE-2018-3899](https://insights.sbomify.com/CVE-2018-3899/): Memory corruption in Yi Technology (high 8.3)
- [CVE-2018-3890](https://insights.sbomify.com/CVE-2018-3890/): Command injection in Yi Technology (high 7.6)
- [CVE-2018-3920](https://insights.sbomify.com/CVE-2018-3920/): Code injection in Yi Technology (high 7.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-3898 and fix it if it is affected.

What it is: CVE-2018-3898 is a high-severity memory corruption vulnerability in unknown Yi Technology, published on 2 Nov 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-3898 in the wild and no public exploit code.

Affected product: unknown Yi Technology. 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-2018-3898/ (Markdown: https://insights.sbomify.com/CVE-2018-3898/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-3898
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-3898
- OSV: https://osv.dev/vulnerability/CVE-2018-3898

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-3898/
Summaries are generated and may contain mistakes; the official description above is the record.