Executive Summary

Title Cisco IOS XR Software IPv6 Malformed Packet Denial of Service Vulnerability
Name cisco-sa-20150220-ipv6 First vendor Publication 2015-02-20
Vendor Cisco Last vendor Modification 2015-02-20
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:M/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.1 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A vulnerability in the parsing of malformed IP version 6 (IPv6) packets in Cisco IOS XR Software for Cisco Network Convergence System 6000 (NCS 6000) and Cisco Carrier Routing System (CRS-X) could allow an unauthenticated, remote attacker to cause a reload of a line card that is processing traffic.

The vulnerability is due to improper processing of malformed IPv6 packets carrying extension headers. An attacker could exploit this vulnerability by sending a malformed IPv6 packet, carrying extension headers, through an affected Cisco IOS XR device line card. An exploit could allow the attacker to cause a reload of the line card on the affected Cisco IOS XR device.

Cisco has released free software updates that address this vulnerability.

There are no workarounds that address this vulnerability.

This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150220-ipv6

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Original Source

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

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-19 Data Handling

CPE : Common Platform Enumeration

Os 2

Nessus® Vulnerability Scanner

Date Description
2015-04-01 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20150220-ipv6-iosxr.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2015-04-02 13:27:36
  • Multiple Updates
2015-02-24 00:26:21
  • Multiple Updates
2015-02-20 21:40:39
  • First insertion