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Cisco Bug: CSCup70353 - Cisco IOS XE Software Web User Interface Denial of Service Vulnerability

Last Modified

Nov 27, 2020

Products (2)

  • Cisco 2600 Series Multiservice Platforms
  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases

15.4(1)S 15.4(1)S1.1 15.4(1)S2 15.4(2)S 15.5(1)S

Description (partial)

Symptoms:
A vulnerability in the web user interface of Cisco IOS XE Software 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

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:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-webui

This advisory is part of the March 22, 2017, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes
five Cisco Security Advisories that describe five vulnerabilities. All the vulnerabilities have a Security Impact Rating of High. For a complete
list of the advisories and links to them, see Cisco Event Response: March 2017 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled
Publication at the following link http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-60851

Conditions:
This vulnerability affects Cisco devices that are running a vulnerable release of a Cisco IOS XE Software and using the persistent web user
interface configuration. See the advisory for more information.

Please see the Cisco IOS XE Software Checker:
http://tools.cisco.com/security/center/selectIOSVersion.x
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