# CVE-2018-16976: Race condition in n/a

> Attackers can bypass access controls during Git repository migration in specific configurations, gaining unintended access to repositories.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 12 Sep 2018
- **Updated:** 16 Sep 2024
- **Also known as:** DEBIAN-CVE-2018-16976, GHSA-jq3h-g8hj-7pmh, MGASA-2018-0434, UBUNTU-CVE-2018-16976

## What is CVE-2018-16976?

CVE-2018-16976 is a high-severity vulnerability in n/a, published on 12 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Gitolite before 3.6.9 does not (in certain configurations involving @all or a regex) properly restrict access to a Git repository that is in the process of being migrated until the full set of migration steps has been completed. This can allow valid users to obtain unintended access.

Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2018-16976?

It affects 1 product.


Products: Gitolite Gitolite.

## How do I fix CVE-2018-16976?

Upgrade to a fixed version.

## Is CVE-2018-16976 being exploited?

There is no known exploitation of CVE-2018-16976 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2010-2447](https://insights.sbomify.com/CVE-2010-2447/): Path traversal in n/a (critical 9.8)
- [CVE-2013-4451](https://insights.sbomify.com/CVE-2013-4451/): Misconfiguration in n/a (critical 9.8)
- [CVE-2018-20683](https://insights.sbomify.com/CVE-2018-20683/): Command injection in n/a (high 8.1)
- [CVE-2011-1572](https://insights.sbomify.com/CVE-2011-1572/): Path traversal in n/a (medium 6.8)
- [CVE-2013-7203](https://insights.sbomify.com/CVE-2013-7203/): Information disclosure in n/a (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-16976 and fix it if it is affected.

What it is: CVE-2018-16976 is a high-severity vulnerability in n/a, published on 12 Sep 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-16976 in the wild and no public exploit code.

Affected product: n/a. 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-2018-16976/ (Markdown: https://insights.sbomify.com/CVE-2018-16976/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-16976
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-16976
- OSV: https://osv.dev/vulnerability/CVE-2018-16976

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-16976/
Summaries are generated and may contain mistakes; the official description above is the record.