FreeBSD 3.x/4.x - 'ipfw' Filtering Evasion
| Reporter | Title | Published | Views | Family All 7 |
|---|---|---|---|---|
 | CVE-2001-0183 | 7 May 200104:00 | – | cve |
 | CVE-2001-0183 | 7 May 200104:00 | – | cvelist |
 | Multiple BSD ipfw / ip6fw ECE Bit Filtering Evasion | 30 Mar 200400:00 | – | nessus |
 | EUVD-2001-0183 | 7 Oct 202500:30 | – | euvd |
 | CVE-2001-0183 | 26 Mar 200105:00 | – | nvd |
 | Firewall ECE-bit bypass | 3 Nov 200500:00 | – | openvas |
| Firewall ECE-bit Bypass | 3 Nov 200500:00 | – | openvas |
source: www.securityfocus.com/bid/2293/info
There exists a serious vulnerability in FreeBSD's implementation of packet filtering for IPv4 and IPv6.
The vulnerability exists in situations where a filtering rule permits packets through if they are part of an established connection.
It is possible for packets that are not part of an established connection to be allowed through. These packets must have the ECE flag set, which is in the TCP reserved options field.
Exploitation of this vulnerability may allow for unauthorized remote access to otherwise protected services.
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/20593.tgzData
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27 Aug 2012 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 27.5
EPSS0.08094