Cisco 12000 Series Router ICMP Unreachable DoS

medium Nessus Plugin ID 10971


The remote router has a denial of service vulnerability.


The remote device appears to be a Cisco 12000 Series router.
According to its version number, it is vulnerable to a denial of service issue. Forcing it to send a large number of ICMP unreachable packets can slow down throughput. A remote attacker could use this to degrade the performance of the network.


Upgrade to the latest version of the software, or disable/rate limit the sending of ICMP unreachable packets.

See Also

Plugin Details

Severity: Medium

ID: 10971

File Name: cisco_gsr_unreachable.nasl

Version: 1.23

Type: local

Family: CISCO

Published: 6/5/2002

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: cpe:/h:cisco:12000_router

Required KB Items: SNMP/sysDesc, SNMP/community, CISCO/model

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2001

Vulnerability Publication Date: 11/14/2001

Reference Information

CVE: CVE-2001-0861

BID: 3534