# CVE-2022-35222: HiCOS Citizen verification component - Stack Buffer Overflow

> An unauthenticated physical attacker can exploit a stack buffer overflow to execute arbitrary code or disrupt service in the HiCOS Citizen verification component.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Aug 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-x9w7-3869-cc5q

## What is CVE-2022-35222?

CVE-2022-35222 is a medium-severity memory corruption vulnerability in HINET HiCOS Citizen verification component - Stack Buffer Overflow, published on 2 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

HiCOS Citizen verification component has a stack-based buffer overflow vulnerability due to insufficient parameter length validation. An unauthenticated physical attacker can exploit this vulnerability to execute arbitrary code, manipulate system command or disrupt service.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2022-35222?

It affects 1 product.


Products: Hinet Hicos Natural Person Credential Component Client.

## How do I fix CVE-2022-35222?

No fix has been published for CVE-2022-35222 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-35222 being exploited?

There is no known exploitation of CVE-2022-35222 in the wild and no public exploit code.

## Other vulnerabilities in HINET HiCOS Citizen verification component - Stack Buffer Overflow

- [CVE-2022-32959](https://insights.sbomify.com/CVE-2022-32959/): HiCOS’ client-side citizen digital certificate - Stack Buffer Overflow (medium 6.8)
- [CVE-2022-32960](https://insights.sbomify.com/CVE-2022-32960/): HiCOS’ client-side citizen digital certificate - Stack Buffer Overflow (medium 6.8)
- [CVE-2022-32961](https://insights.sbomify.com/CVE-2022-32961/): HiCOS’ client-side citizen digital certificate - Stack Buffer Overflow (medium 6.8)
- [CVE-2022-32962](https://insights.sbomify.com/CVE-2022-32962/): HiCOS’ client-side citizen digital certificate - Double Free (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-35222 and fix it if it is affected.

What it is: CVE-2022-35222 is a medium-severity memory corruption vulnerability in HINET HiCOS Citizen verification component - Stack Buffer Overflow, published on 2 Aug 2022. 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-2022-35222 in the wild and no public exploit code.

Affected product: HINET HiCOS Citizen verification component - Stack Buffer Overflow. 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-2022-35222/ (Markdown: https://insights.sbomify.com/CVE-2022-35222/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-35222
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-35222
- OSV: https://osv.dev/vulnerability/CVE-2022-35222

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-35222/
Summaries are generated and may contain mistakes; the official description above is the record.