# CVE-2018-7170: Business logic in n/a

> Authenticated attackers with symmetric keys can manipulate NTP clock selection via Sybil attacks, altering victim system time.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/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:** 6 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-7170, GHSA-v9cv-3r4j-cx4j, UBUNTU-CVE-2018-7170

## What is CVE-2018-7170?

CVE-2018-7170 is a medium-severity vulnerability in Netapp Solidfire, published on 6 Mar 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.

## Which versions are affected by CVE-2018-7170?

It affects 9 products.


Products: Hpe Hpux-Ntp, Netapp Hci, Netapp Solidfire, Ntp Ntp, Synology Diskstation Manager, Synology Router Manager, Synology Skynas, Synology Virtual Diskstation Manager, Synology Vs960hd Firmware.

## How do I fix CVE-2018-7170?

Upgrade to a fixed version.

## Is CVE-2018-7170 being exploited?

There is no known exploitation of CVE-2018-7170 in the wild and no public exploit code.

## Other vulnerabilities in Netapp Solidfire

- [CVE-2016-7434](https://insights.sbomify.com/CVE-2016-7434/): Denial of service in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7170 and fix it if it is affected.

What it is: CVE-2018-7170 is a medium-severity vulnerability in Netapp Solidfire, published on 6 Mar 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-2018-7170 in the wild and no public exploit code.

Affected product: Netapp Solidfire. 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-2018-7170/ (Markdown: https://insights.sbomify.com/CVE-2018-7170/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7170
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7170
- OSV: https://osv.dev/vulnerability/CVE-2018-7170

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-7170/
Summaries are generated and may contain mistakes; the official description above is the record.