OpenBSD TCP Implementation tcp_input.c privileges management

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in OpenBSD and classified as critical. The affected element is an unknown function of the file tcp_input.c of the component TCP Implementation. This manipulation causes privileges management. This vulnerability appears as CVE-2002-0381. There is no available exploit. It is advisable to implement restrictive firewalling.

Detailsinfo

A vulnerability classified as critical was found in OpenBSD (Operating System) (the affected version unknown). Affected by this vulnerability is an unknown part of the file tcp_input.c of the component TCP Implementation. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. The summary by CVE is:

The TCP implementation in various BSD operating systems (tcp_input.c) does not properly block connections to broadcast addresses, which could allow remote attackers to bypass intended filters via packets with a unicast link layer address and an IP broadcast address.

The weakness was presented 02/16/2002 by Crist J. Clark (Website). It is possible to read the advisory at FreeBSD.org. This vulnerability is known as CVE-2002-0381. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Proper firewalling of is able to address this issue.

The vulnerability is also documented in the databases at X-Force (8485), SecurityFocus (BID 4309†) and OSVDB (5308†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
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: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/16/2002 🔍
03/18/2002 +30 days 🔍
06/25/2002 +99 days 🔍
04/09/2004 +653 days 🔍
07/11/2014 +3745 days 🔍
06/07/2018 +1427 days 🔍

Sourcesinfo

Advisory: FreeBSD.org
Researcher: Crist J. Clark
Status: Not defined
Confirmation: 🔍

CVE: CVE-2002-0381 (🔍)
GCVE (CVE): GCVE-0-2002-0381
GCVE (VulDB): GCVE-100-18343
X-Force: 8485
SecurityFocus: 4309 - BSD TCP/IP Broadcast Connection Check Vulnerability
OSVDB: 5308 - Multiple BSD Broadcast Address Filter Bypass

Entryinfo

Created: 07/11/2014 14:17
Updated: 06/07/2018 09:01
Changes: 07/11/2014 14:17 (48), 06/07/2018 09:01 (8)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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