Executive Summary

Title Cisco IOS XE Software Network Address Translation Denial of Service Vulnerability
Name cisco-sa-20150923-iosxe First vendor Publication 2015-09-23
Vendor Cisco Last vendor Modification 2015-09-23
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


A vulnerability in the processing of IPv4 packets that require Network Address Translation (NAT) and Multiprotocol Label Switching (MPLS) services of Cisco IOS XE Software for Cisco ASR 1000 Series, Cisco ISR 4300 Series, Cisco ISR 4400 Series, and Cisco Cloud Services 1000v Series Routers could allow an unauthenticated, remote attacker to cause a reload of the affected device.

The vulnerability is due to improper processing of IPv4 packets that require NAT and MPLS processing. An attacker could exploit this vulnerability by sending an IPv4 packet to be processed by a Cisco IOS XE device configured to perform NAT and MPLS services. A successful exploit could allow the attacker to cause a reload of the affected device.

Cisco has released software updates that address these vulnerabilities. There are no workarounds to mitigate this vulnerability.

This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150923-iosxe

Note: The September 23, 2015, release of the Cisco IOS and IOS XE Software Security Advisory bundled publication includes three Cisco Security Advisories. All the advisories address vulnerabilities in Cisco IOS Software and Cisco IOS XE Software. Individual publication links are in Cisco Event Response: September 2015 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep15.html

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Original Source

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

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-399 Resource Management Errors
50 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

Os 95

Nessus® Vulnerability Scanner

Date Description
2015-10-02 Name : The remote device is missing vendor-supplied security patches.
File : cisco-sa-20150923-iosxe.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2015-10-03 13:24:07
  • Multiple Updates
2015-09-29 00:21:46
  • Multiple Updates
2015-09-23 21:22:02
  • First insertion