National Cyber Awareness System

Vulnerability Summary for CVE-2012-4623

Overview

The DHCPv6 server in Cisco IOS 12.2 through 12.4 and 15.0 through 15.2 and IOS XE 2.1.x through 2.6.x, 3.1.xS before 3.1.4S, 3.1.xSG and 3.2.xSG before 3.2.5SG, 3.2.xS, 3.2.xXO, 3.3.xS, and 3.3.xSG before 3.3.1SG allows remote attackers to cause a denial of service (device reload) via a malformed DHCPv6 packet, aka Bug ID CSCto57723.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: XF

Name: ciscoios-ciscoiosxe-dhcpv6-dos(78885)

Hyperlink:http://xforce.iss.net/xforce/xfdb/78885

External Source: SECTRACK

Name: 1027577

Hyperlink:http://www.securitytracker.com/id?1027577

External Source: BID

Name: 55700

Hyperlink:http://www.securityfocus.com/bid/55700

External Source: CISCO

Name: 20120926 Cisco IOS Software DHCP Version 6 Server Denial of Service Vulnerability

Type: Advisory

Hyperlink:http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-dhcpv6

External Source: OSVDB

Name: 85810

Hyperlink:http://osvdb.org/85810