Executive Summary

Summary
Title Cisco IOS Software Crafted Network Time Protocol Packets Denial of Service Vulnerability
Informations
Name cisco-sa-20160804-wedge First vendor Publication 2016-08-04
Vendor Cisco Last vendor Modification 2016-08-04
Severity (Vendor) N/A Revision 1.0

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:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A vulnerability in the processing of Network Time Protocol (NTP) packets by Cisco IOS could allow an unauthenticated, remote attacker to cause an interface wedge and an eventual denial of service (DoS) condition on the affected device.

The vulnerability is due to insufficient checks on clearing the invalid NTP packets from the interface queue. An attacker could exploit this vulnerability by sending a number of crafted NTP packets to be processed by an affected device. An exploit could allow the attacker to cause an interface wedge and an eventual denial of service (DoS) condition on the affected device.

Cisco released software updates that address this vulnerability. There are no workarounds that address this vulnerability; however, there is a mitigation for this vulnerability.

This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160804-wedge

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Original Source

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

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 4

Snort® IPS/IDS

Date Description
2016-08-17 Cisco IOS truncated NTP packet processing denial of service attempt
RuleID : 39878 - Revision : 1 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date Description
2016-08-29 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20160804-wedge-ios.nasl - Type : ACT_GATHER_INFO
2016-08-29 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20160804-wedge-iosxe.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2016-08-30 13:21:27
  • Multiple Updates
2016-08-11 17:24:26
  • Multiple Updates
2016-08-08 09:25:32
  • Multiple Updates
2016-08-04 21:23:55
  • First insertion