National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-3963 Detail

Current Description

An exploitable command injection vulnerability exists in the DHCP daemon configuration of the CUJO Smart Firewall. When adding a new static DHCP address, its corresponding hostname is inserted into the dhcpd.conf file without prior sanitization, allowing for arbitrary execution of system commands. To trigger this vulnerability, an attacker can send a DHCP request message and set up the corresponding static DHCP entry.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.0 CRITICAL
Vector: AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H (V3.0 legend)
Impact Score: 6.0
Exploitability Score: 2.3


Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 8.3 HIGH
Vector: (AV:A/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 6.5


Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0627 Exploit Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Neutralization of Special Elements used in a Command ('Command Injection') (CWE-77)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:getcujo:smart_firewall:7003:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-3963
NVD Published Date:
03/21/2019
NVD Last Modified:
10/02/2019