Executive Summary

Summary
Title Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability
Informations
Name cisco-sa-20180620-nx-os-fabric-dos First vendor Publication 2018-06-20
Vendor Cisco Last vendor Modification 2018-06-20
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to obtain sensitive information from memory or cause a denial of service (DoS) condition on the affected product.

The vulnerability exists because the affected software insufficiently validates header values in Cisco Fabric Services packets. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overread condition, which could allow the attacker to obtain sensitive information from memory or cause a DoS condition on the affected product.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-nx-os-fabric-dos ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-nx-os-fabric-dos"]

This advisory is part of the June 2018 Cisco FXOS and NX-OS Software Security Advisory Collection, which includes 24 Cisco Security Advisories that describe 24 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: June 2018 Cisco FXOS and NX-OS Software Security Advisory Collection ["https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-67770"].

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Original Source

Url : http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco (...)

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-125 Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 2
Os 55
Os 9

Snort® IPS/IDS

Date Description
2020-12-05 Cisco NX-OS Fabric Services Protocol denial of service attempt
RuleID : 46994 - Revision : 1 - Type : SERVER-OTHER
2020-12-05 Cisco NX-OS Fabric Services Protocol denial of service attempt
RuleID : 46993 - Revision : 1 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date Description
2018-06-25 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20180620-cfs.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2020-12-05 21:23:46
  • Multiple Updates
2018-08-14 00:21:35
  • Multiple Updates
2018-06-21 17:21:16
  • Multiple Updates
2018-06-20 21:19:34
  • First insertion