FreeBSD up to 4.2 ipfw/ip6fw ECE Flag privileges management

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in FreeBSD up to 4.2. This affects an unknown part of the component ipfw/ip6fw. The manipulation as part of ECE Flag leads to privileges management. This vulnerability is uniquely identified as CVE-2001-0183. Furthermore, there is an exploit available. It is recommended to upgrade the affected component. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability, which was classified as critical, has been found in FreeBSD up to 4.2 (Operating System). Affected by this issue is an unknown function of the component ipfw/ip6fw. The manipulation as part of a ECE Flag leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was disclosed 01/23/2001 by Aragon Gouveia (Website). The advisory is available at ftp.freebsd.org. This vulnerability is handled as CVE-2001-0183. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

After 2 days, there has been an exploit disclosed. The exploit is available at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 12118 (Multiple BSD ipfw / ip6fw ECE Bit Filtering Evasion), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Firewalls and running in the context r.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5998), Exploit-DB (20593), Tenable (12118), SecurityFocus (BID 2293†) and OSVDB (1743†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 12118
Nessus Name: Multiple BSD ipfw / ip6fw ECE Bit Filtering Evasion
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 12118
OpenVAS Name: Firewall ECE-bit bypass
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

01/23/2001 🔍
01/23/2001 +0 days 🔍
01/23/2001 +0 days 🔍
01/25/2001 +2 days 🔍
03/26/2001 +60 days 🔍
02/21/2003 +697 days 🔍
03/30/2004 +402 days 🔍
04/07/2004 +8 days 🔍
07/03/2014 +3739 days 🔍
08/18/2024 +3699 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: ftp.freebsd.org
Researcher: Aragon Gouveia
Status: Not defined

CVE: CVE-2001-0183 (🔍)
GCVE (CVE): GCVE-0-2001-0183
GCVE (VulDB): GCVE-100-16562
X-Force: 5998
SecurityFocus: 2293 - FreeBSD ipfw Filtering Evasion Vulnerability
OSVDB: 1743 - Multiple BSD ipfw / ip6fw ECE Bit Filtering Evasion
Vulnerability Center: 4102 - FreeBsd Access Restriction Bypassing via ECE Flag Set in TCP Packets, High

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/03/2014 04:07 PM
Updated: 08/18/2024 11:30 PM
Changes: 07/03/2014 04:07 PM (75), 05/20/2019 06:55 PM (3), 08/18/2024 11:30 PM (17)
Complete: 🔍
Cache ID: 18:00E:40

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