PT-2017-2015 · Cisco · Cisco Ios Xe+1

Published 2017-03-22 · Updated 2020-09-04 · CVE-2017-3864

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS versions 12.2, 12.4, and 15.0 through 15.6 Cisco IOS XE versions 3.3 through 3.7

Description A vulnerability in the DHCP client implementation could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability occurs during the parsing of a crafted DHCP packet. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that is configured as a DHCP client. A successful exploit could allow the attacker to cause a reload of an affected device, resulting in a DoS condition.

Recommendations For Cisco IOS versions 12.2, 12.4, and 15.0 through 15.6, update to a fixed release of Cisco IOS Software. For Cisco IOS XE versions 3.3 through 3.7, update to a fixed release of Cisco IOS XE Software. As a temporary workaround, consider restricting the use of the DHCP client configuration to minimize the risk of exploitation.

Fix

DoS

Weakness Enumeration

CWE-399

Related Identifiers

BDU:2017-01182

CVE-2017-3864

Affected Products

Cisco Ios

Cisco Ios Xe

References · 6

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-dhcpc · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-3864 · Security Note
• https://bdu.fstec.ru/vul/2017-01182 · Security Note
• https://osv.dev/vulnerability/CVE-2017-3864 · Vendor Advisory
• http://securitytracker.com/id/1038103 · Note
• http://securityfocus.com/bid/97012 · Note