CVE-2017-3856 Information

Description

A vulnerability in the web user interface of Cisco IOS XE 3.1 through 3.17 could allow an unauthenticated remote attacker to cause an affected device to reload. The vulnerability is due to insufficient resource handling by the affected software when the web user interface is under a high load. An attacker could exploit this vulnerability by sending a high number of requests to the web user interface of the affected software. A successful exploit could allow the attacker to cause the affected device to reload resulting in a denial of service (DoS) condition. To exploit this vulnerability the attacker must have access to the management interface of the affected software which is typically connected to a restricted management network. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software if the web user interface of the software is enabled. By default the web user interface is not enabled. Cisco Bug IDs: CSCup70353.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/97007 http://www.securitytracker.com/id/1038101 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-webui

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5