CVE-2001-0183

high

Description

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/5998

http://www.security-express.com/archives/bugtraq/2001-01/0424.html

http://www.osvdb.org/1743

http://www.ciac.org/ciac/bulletins/l-029.shtml

Details

Source: Mitre, NVD

Published: 2001-03-26

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 7.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L