PT-2017-2019 · Cisco · Cisco Ios Xe

Published 2017-03-22 · Updated 2019-10-03 · CVE-2017-3856

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Cisco IOS XE versions 3.1 through 3.17

Description A vulnerability in the web user interface of Cisco IOS XE 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.

Recommendations For Cisco IOS XE versions 3.1 through 3.17, update to a fixed release of Cisco IOS XE Software to address this vulnerability. As a temporary workaround, consider restricting access to the management interface of the affected software to minimize the risk of exploitation. Avoid sending a high number of requests to the web user interface of the affected software until the issue is resolved.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

CWE-399

Related Identifiers

BDU:2017-01186

CVE-2017-3856

Affected Products

Cisco Ios Xe

References · 6

• https://bdu.fstec.ru/vul/2017-01186 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-webui · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-3856 · Security Note
• https://osv.dev/vulnerability/CVE-2017-3856 · Vendor Advisory
• http://securitytracker.com/id/1038101 · Note
• http://securityfocus.com/bid/97007 · Note