National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-0455 Detail

Current Description

A vulnerability in the Server Message Block Version 2 (SMBv2) and Version 3 (SMBv3) protocol implementation for the Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause the device to run low on system memory, possibly preventing the device from forwarding traffic. It is also possible that a manual reload of the device may be required to clear the condition. The vulnerability is due to incorrect SMB header validation. An attacker could exploit this vulnerability by sending a custom SMB file transfer through the targeted device. A successful exploit could cause the device to consume an excessive amount of system memory and prevent the SNORT process from forwarding network traffic. This vulnerability can be exploited using either IPv4 or IPv6 in combination with SMBv2 or SMBv3 network traffic.

Source:  MITRE
Description Last Modified:  10/05/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3 legend)
Impact Score: 3.6
Exploitability Score: 3.9


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

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-fp-smb-snort Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:cisco:firepower_system_software:6.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:firepower_system_software:6.0.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:firepower_system_software:6.1.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:firepower_system_software:6.2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:firepower_system_software:6.2.0.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:firepower_system_software:6.2.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:firepower_system_software:6.2.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:cisco:firepower_system_software:6.2.3:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0455
NVD Published Date:
10/05/2018
NVD Last Modified:
01/10/2019