Executive Summary

Title Cisco Voice Operating System-Based Products Unauthorized Access Vulnerability
Name cisco-sa-20171115-vos First vendor Publication 2017-11-15
Vendor Cisco Last vendor Modification 2017-11-15
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:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A vulnerability in the upgrade mechanism of Cisco collaboration products based on the Cisco Voice Operating System software platform could allow an unauthenticated, remote attacker to gain unauthorized, elevated access to an affected device.

The vulnerability occurs when a refresh upgrade or Prime Collaboration Deployment (PCD) migration is performed on an affected device. When a refresh upgrade or PCD migration is completed successfully, an engineering flag remains enabled and could allow root access to the device with a known password.

If the vulnerable device is subsequently upgraded using the standard upgrade method to an Engineering Special Release, service update, or a new major release of the affected product, this vulnerability is remediated by that action.

Note: Engineering Special Releases that are installed as COP files, as opposed to the standard upgrade method, do not remediate this vulnerability.

An attacker who can access an affected device over SFTP while it is in a vulnerable state could gain root access to the device. This access could allow the attacker to compromise the affected system completely.

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-20171115-vos ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-vos"]


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Original Source

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

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-287 Improper Authentication

CPE : Common Platform Enumeration

Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Application 2
Application 1
Application 1
Application 1
Os 1

Nessus® Vulnerability Scanner

Date Description
2017-11-17 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20171115-vos-unified_communications_manager.nasl - Type : ACT_GATHER_INFO
2017-11-17 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20171115-vos-unified_presence.nasl - Type : ACT_GATHER_INFO
2017-11-17 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20171115-vos-unity_connection.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2017-11-30 17:24:06
  • Multiple Updates
2017-11-18 13:24:06
  • Multiple Updates
2017-11-16 12:09:47
  • Multiple Updates
2017-11-15 21:24:04
  • First insertion