CVE-2001-1387: n/a vulnerability

CVE-2001-1387: iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-w...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 04:51 UTC (UTC+00:00)

Security readout for executives and security teams

A legacy iptables-save bug could silently change a saved firewall rejection rule. Instead of preserving an administrator’s host-prohibited response, it could save tcp-reset, causing restored firewall behavior to differ from policy and potentially reveal network information. Exposure is most likely limited to very old Linux systems, embedded devices, or unsupported appliances still using iptables-save from iptables before 1.2.4. The source bundle does not enumerate affected distributions beyond Red Hat references. Treat this as a low-priority legacy hygiene issue unless old Linux firewalls remain in production. It is not a modern widespread emergency based on the provided evidence, but unsupported perimeter systems deserve prompt inventory and remediation. Mitigation focus: Inventory systems running iptables or legacy firewall management packages.; Upgrade iptables away from versions before 1.2.4 where vendor-supported packages exist.; Review Red Hat advisory RHSA-2001:144 and applicable distribution guidance..

Prepared: Jul 1, 2026, 06:17 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Aug 31, 2002, 04:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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