CVE Catalog

CVE-2001-0183

High
Published: Translated: NVD NIST

Summary

ipfw and ip6fw in FreeBSD 4.2 and earlier allow remote attackers to bypass access restrictions by setting the ECE flag in a TCP packet, which makes the packet appear to be part of an established connection.

Risk Assessment

Attackers may gain access to resources they would normally not have permissions for, potentially leading to serious security breaches within the organization.

Recommendation

It is recommended to upgrade FreeBSD to a newer version to eliminate this vulnerability and to monitor network traffic for suspicious packets.

Related vulnerabilities

Original NVD description (English source)

ipfw and ip6fw in FreeBSD 4.2 and earlier allows remote attackers to bypass access restrictions by setting the ECE flag in a TCP packet, which makes the packet appear to be part of an established connection.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS