Executive Summary

Title Cisco IOS XR Software Denial of Service Vulnerability
Name cisco-sa-20170503-ios-xr First vendor Publication 2017-05-03
Vendor Cisco Last vendor Modification 2017-05-03
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: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 Event Management Service daemon (emsd) of Cisco IOS XR routers, could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device.

The vulnerability is due to improper handling of gRPC requests. An attacker could exploit this vulnerability by repeatedly sending unauthenticated gRPC requests to the affected device. A successful exploit could allow the attacker to crash the device in such a manner that manual intervention is required to recover.

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: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-ios-xr ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-ios-xr"]


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Original Source

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

CPE : Common Platform Enumeration

Os 2

Nessus® Vulnerability Scanner

Date Description
2017-05-04 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20170503-iosxr.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2017-05-25 00:24:07
  • Multiple Updates
2017-05-16 21:24:06
  • Multiple Updates
2017-05-05 13:22:58
  • Multiple Updates
2017-05-03 21:21:48
  • First insertion