Executive Summary

Title Cisco IOS XE Software Web UI Privilege Escalation Vulnerability
Name cisco-sa-20170927-privesc First vendor Publication 2017-09-27
Vendor Cisco Last vendor Modification 2017-09-27
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:S/C:C/I:C/A:C)
Cvss Base Score 9 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores


A vulnerability in the web-based user interface (web UI) of Cisco IOS XE Software could allow an authenticated, remote attacker to elevate their privileges on an affected device.

The vulnerability is due to incorrect default permission settings for new users who are created by using the web UI of the affected software. An attacker could exploit this vulnerability by using the web UI of the affected software to create a new user and then logging into the web UI as the newly created user. A successful exploit could allow the attacker to elevate their privileges on the affected device.

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-20170927-privesc ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-privesc"]

This advisory is part of the September 27, 2017, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 12 Cisco Security Advisories that describe 13 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: September 2017 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-63410"].


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Original Source

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

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-276 Incorrect Default Permissions

CPE : Common Platform Enumeration

Os 1

Snort® IPS/IDS

Date Description
2017-09-28 Cisco IOS XE Web UI user administration page access detected
RuleID : 44457 - Revision : 1 - Type : POLICY-OTHER

Nessus® Vulnerability Scanner

Date Description
2017-10-02 Name : The remote device is missing a vendor-supplied security patch.
File : cisco-sa-20170927-privesc-ios_xe.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2017-10-07 00:24:30
  • Multiple Updates
2017-10-03 13:24:35
  • Multiple Updates
2017-09-29 09:26:02
  • Multiple Updates
2017-09-27 21:23:10
  • First insertion