Executive Summary

Summary
Title Cisco Adaptive Security Appliance Software DHCPv6 Relay Denial of Service Vulnerability
Informations
Name cisco-sa-20160420-asa-dhcpv6 First vendor Publication 2016-04-20
Vendor Cisco Last vendor Modification 2016-04-20
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: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 DHCPv6 relay feature of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause an affected device to reload.

The vulnerability is due to insufficient validation of DHCPv6 packets. An attacker could exploit this vulnerability by sending crafted DHCPv6 packets to an affected device, resulting in a denial of service (DoS) condition.

This vulnerability affects systems configured in routed firewall mode and in single or multiple context mode. Cisco ASA Software is affected by this vulnerability only if the software is configured with the DHCPv6 relay feature. The vulnerability is triggered only by IPv6 traffic.

This vulnerability affects Cisco ASA Software release 9.4.1 only.

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: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160420-asa-dhcpv6

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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
Application 1

Snort® IPS/IDS

Date Description
2016-03-14 Cisco ASA DHCPv6 relay solicit denial of service attempt
RuleID : 36558 - Revision : 2 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date Description
2016-04-26 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20160420-asa-dhcpv6.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
Date Informations
2016-04-28 13:28:16
  • Multiple Updates
2016-04-27 09:42:07
  • Multiple Updates
2016-04-20 21:25:45
  • First insertion