CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.1	$0-$5k	0.00

A vulnerability classified as critical has been found in Linux Kernel 2.0.18/2.2.18 (Operating System). Affected is the function ip_masq_ir of the component IP Masquerading Handler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

IRC DCC helper in the ip_masq_irc IP masquerading module 2.2 allows remote attackers to bypass intended firewall restrictions by causing the target system to send a "DCC SEND" request to a malicious server which listens on port 6667, which may cause the module to believe that the traffic is a valid request and allow the connection to the port specified in the DCC SEND request.

The weakness was published 07/31/2001 by Michal Zalewski (Website). The advisory is shared for download at razor.bindview.com. This vulnerability is traded as CVE-2001-1056. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

After immediately, there has been an exploit disclosed.

It is possible to mitigate the weakness by firewalling 6667.

The vulnerability is also documented in the vulnerability database at X-Force (6923).

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 2.0.18
• 2.2.18

License

• open-source

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

Exploit Delay Time: 🔍

Firewalling: 🔍

Timelineinfo

07/30/2001 🔍
07/30/2001 +0 days 🔍
07/31/2001 +1 days 🔍
07/31/2001 +0 days 🔍
02/21/2003 +570 days 🔍
07/07/2014 +4153 days 🔍
04/13/2019 +1741 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: razor.bindview.com
Researcher: Michal Zalewski
Status: Not defined

CVE: CVE-2001-1056 (🔍)
X-Force: 6923
SecurityFocus: 3117 - Linux IRC IP Masquerading Module Arbitrary Firewall Rule Insertion Vulnerability
OSVDB: 1916 - Linux IRC IP Masquerading Module Firewall Bypass

Entryinfo

Created: 07/07/2014 16:51
Updated: 04/13/2019 17:06
Changes: 07/07/2014 16:51 (55), 04/13/2019 17:06 (5)
Complete: 🔍

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