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CVE-2001-1387

2.1 · LOW

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 th…

Published Nov 5, 2001netfilterCWE-203EPSS 0.40%

Overview

CVE-2001-1387 is a low-severity vulnerability affecting netfilter iptables. It was published on November 5, 2001 and has a CVSS 2.0 base score of 2.1 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from netfilter. Update iptables to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
netfilteriptables>= 0, < 1.2.4Affected

References

Refbugzilla.redhat.com/bugzilla/show_bug.cgi?id=50500Refrhn.redhat.com/errata/RHSA-2001-144.htmlRefbugzilla.redhat.com/bugzilla/show_bug.cgi?id=50500Refrhn.redhat.com/errata/RHSA-2001-144.html

How CyberStrike helps

Frequently asked questions

What is CVE-2001-1387?

CVE-2001-1387 is a low-severity vulnerability affecting netfilter iptables. It was published on November 5, 2001 and has a CVSS 2.0 base score of 2.1 (LOW).

How severe is CVE-2001-1387?

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2001-1387?

Check the references section for vendor advisories and patches from netfilter. Update iptables to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2001-1387?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2001-1387 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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