# CVE-2018-5223: Command injection in Fisheye and Crucible

> An attacker with repository addition permissions can execute arbitrary code on Windows systems by injecting arguments into Mercurial repository URIs.

- **Severity:** High 7.2 (`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Mar 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-cmrm-j5wq-2rcr

## What is CVE-2018-5223?

CVE-2018-5223 is a high-severity command injection vulnerability in Atlassian Crucible, published on 29 Mar 2018. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Fisheye and Crucible did not correctly check if a configured Mercurial repository URI contained values that the Windows operating system may consider argument parameters. An attacker who has permission to add a repository in Fisheye or Crucible can execute code of their choice on systems that run a vulnerable version of Fisheye or Crucible on the Windows operating system. All versions of Fisheye and Crucible before 4.4.6 (the fixed version for 4.4.x) and from 4.5.0 before 4.5.3 (the fixed version for 4.5.x) are affected by this vulnerability.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2018-5223?

It affects 2 products.


Products: Atlassian Crucible, Atlassian Fisheye.

## How do I fix CVE-2018-5223?

No fix has been published for CVE-2018-5223 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-5223 being exploited?

There is no known exploitation of CVE-2018-5223 in the wild and no public exploit code.

## Other vulnerabilities in Atlassian Crucible

- [CVE-2021-43958](https://insights.sbomify.com/CVE-2021-43958/): Security feature bypass in Crucible (critical 9.8)
- [CVE-2017-16861](https://insights.sbomify.com/CVE-2017-16861/): Code injection in Fisheye and Crucible (critical 9.8)
- [CVE-2017-14591](https://insights.sbomify.com/CVE-2017-14591/): Command injection in Fisheye and Crucible (critical 9.0)
- [CVE-2020-4018](https://insights.sbomify.com/CVE-2020-4018/): Cross-site request forgery in Crucible (high 8.8)
- [CVE-2018-13399](https://insights.sbomify.com/CVE-2018-13399/): Privilege escalation in Fisheye and Crucible (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5223 and fix it if it is affected.

What it is: CVE-2018-5223 is a high-severity command injection vulnerability in Atlassian Crucible, published on 29 Mar 2018. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-5223 in the wild and no public exploit code.

Affected product: Atlassian Crucible. 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-2018-5223/ (Markdown: https://insights.sbomify.com/CVE-2018-5223/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5223
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5223
- OSV: https://osv.dev/vulnerability/CVE-2018-5223

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5223/
Summaries are generated and may contain mistakes; the official description above is the record.