Executive Summary

Summary
Title Cisco ASA Software Local Certificate Authority Denial of Service Vulnerability
Informations
Name cisco-sa-20161019-asa-ca First vendor Publication 2016-10-19
Vendor Cisco Last vendor Modification 2016-10-19
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: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

Detail

A vulnerability in the local Certificate Authority (CA) feature of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload of the affected system.

The vulnerability is due to improper handling of crafted packets during the enrollment operation. An attacker could exploit this vulnerability by sending a crafted enrollment request to the affected system. An exploit could allow the attacker to cause the reload of the affected system.

Note: Only HTTPS packets directed to the Cisco ASA interface, where the local CA is allowing user enrollment, can be used to trigger this vulnerability. This vulnerability affects systems configured in routed firewall mode and in single or multiple context mode.

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-20161019-asa-ca

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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 206

Snort® IPS/IDS

Date Description
2016-10-20 Cisco ASA Crypto CA Server out of bounds read attempt
RuleID : 40498 - Revision : 2 - Type : SERVER-WEBAPP

Nessus® Vulnerability Scanner

Date Description
2016-10-26 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20161019-asa-ca.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2016-10-29 00:25:21
  • Multiple Updates
2016-10-28 17:24:57
  • Multiple Updates
2016-10-27 13:26:38
  • Multiple Updates
2016-10-19 21:21:25
  • First insertion