Executive Summary

Summary
Title Cisco IOS XR Software Crafted IPv6 Packet Denial of Service Vulnerability
Informations
Name cisco-sa-20150611-iosxr First vendor Publication 2015-06-11
Vendor Cisco Last vendor Modification 2015-06-11
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 IP version 6 (IPv6) processing code of Cisco IOS XR Software for Cisco CRS-3 Carrier Routing System could allow an unauthenticated, remote attacker to trigger an ASIC scan of the Network Processor Unit (NPU) and a reload of the line card processing an IPv6 packet.

The vulnerability is due to incorrect processing of an IPv6 packet carrying IPv6 extension headers that are valid but unlikely to be seen during normal operation. An attacker could exploit this vulnerability by sending such an IPv6 packet to an affected device that is configured to process IPv6 traffic. An exploit could allow the attacker to cause a reload of the line card, resulting in a DoS condition.

Cisco has released free software updates that address this vulnerability. There is no workaround that mitigates this vulnerability.

This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150611-iosxr

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Original Source

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

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-399 Resource Management Errors

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 10

Information Assurance Vulnerability Management (IAVM)

Date Description
2015-06-18 IAVM : 2015-B-0074 - Cisco IOS XR Software Denial of Service Vulnerability
Severity : Category I - VMSKEY : V0060975

Nessus® Vulnerability Scanner

Date Description
2015-06-19 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20150611-iosxr.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2015-10-18 17:22:09
  • Multiple Updates
2015-06-20 13:30:16
  • Multiple Updates
2015-06-15 21:30:57
  • Multiple Updates
2015-06-11 21:25:40
  • First insertion