# CVE-2020-12775: Hicos citizen certificate client-side component - Command Injection

> Unauthenticated remote attackers can execute arbitrary system commands or disrupt services via command injection in the Hicos citizen certificate client.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Mar 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-mhvq-4787-px9g

## What is CVE-2020-12775?

CVE-2020-12775 is a critical command injection vulnerability in Hicos citizen certificate client-side component, published on 1 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Hicos citizen certificate client-side component does not filter special characters for command parameters in specific web URLs. An unauthenticated remote attacker can exploit this vulnerability to perform command injection attack to execute arbitrary system command, disrupt system or terminate service.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2020-12775?

It affects 1 product.


Products: Moica Hicos.

## How do I fix CVE-2020-12775?

No fix has been published for CVE-2020-12775 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-12775 being exploited?

There is no known exploitation of CVE-2020-12775 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-12775 and fix it if it is affected.

What it is: CVE-2020-12775 is a critical command injection vulnerability in Hicos citizen certificate client-side component, published on 1 Mar 2022. 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-2020-12775 in the wild and no public exploit code.

Affected product: Hicos citizen certificate client-side component. 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-2020-12775/ (Markdown: https://insights.sbomify.com/CVE-2020-12775/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-12775
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-12775
- OSV: https://osv.dev/vulnerability/CVE-2020-12775

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-12775/
Summaries are generated and may contain mistakes; the official description above is the record.