# CVE-2016-7030: Denial of service in n/a

> Remote attackers can lock out system service accounts by triggering the default five-attempt password lockout policy, causing denial of service.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Aug 2017
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-7030, GHSA-7f4g-pxcg-hgv7, UBUNTU-CVE-2016-7030

## What is CVE-2016-7030?

CVE-2016-7030 is a high-severity denial of service vulnerability in n/a, published on 28 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

FreeIPA uses a default password policy that locks an account after 5 unsuccessful authentication attempts, which allows remote attackers to cause a denial of service by locking out the account in which system services run on.

Weakness: CWE-255

## Which versions are affected by CVE-2016-7030?

It affects 1 product.


Products: Freeipa Freeipa.

## How do I fix CVE-2016-7030?

Change a configuration setting.

## Is CVE-2016-7030 being exploited?

There is no known exploitation of CVE-2016-7030 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2015-5284](https://insights.sbomify.com/CVE-2015-5284/): Information disclosure in n/a (critical 9.8)
- [CVE-2026-11861](https://insights.sbomify.com/CVE-2026-11861/): Freeipa: idm: ipa: freeipa: obtaining tgs with impersonating cname through trust relationships (critical 9.6)
- [CVE-2024-2698](https://insights.sbomify.com/CVE-2024-2698/): Freeipa: delegation rules allow a proxy service to impersonate any user to access another target service (high 8.8)
- [CVE-2012-5631](https://insights.sbomify.com/CVE-2012-5631/): Information disclosure in ipa (high 8.8)
- [CVE-2017-11191](https://insights.sbomify.com/CVE-2017-11191/): Security feature bypass in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7030 and fix it if it is affected.

What it is: CVE-2016-7030 is a high-severity denial of service vulnerability in n/a, published on 28 Aug 2017. 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-2016-7030 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-2016-7030/ (Markdown: https://insights.sbomify.com/CVE-2016-7030/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7030
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7030
- OSV: https://osv.dev/vulnerability/CVE-2016-7030

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7030/
Summaries are generated and may contain mistakes; the official description above is the record.