Cisco IOS Software DHCP Version 6 Server Denial of Service Vulnerability (cisco-sa-20120926-dhcpv6)

high Nessus Plugin ID 62373
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The remote device is missing a vendor-supplied security patch.


Cisco IOS Software and Cisco IOS XE Software contain a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. An attacker could exploit this vulnerability by sending a crafted request to an affected device that has the DHCP version 6 (DHCPv6) server feature enabled, causing a reload. Cisco has released free software updates that address this vulnerability.


Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20120926-dhcpv6.

See Also

Plugin Details

Severity: High

ID: 62373

File Name: cisco-sa-20120926-dhcpv6.nasl

Version: 1.15

Type: combined

Family: CISCO

Published: 9/28/2012

Updated: 11/15/2018

Dependencies: cisco_ios_version.nasl

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 10/18/2012

Vulnerability Publication Date: 9/26/2012

Reference Information

CVE: CVE-2012-4623

BID: 55700


CISCO-SA: cisco-sa-20120926-dhcpv6