National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-1999-0523 Detail

Current Description

ICMP echo (ping) is allowed from arbitrary hosts.

Source:  MITRE
View Analysis Description


CVSS v2.0 Severity and Metrics:

Base Score: 0.0 LOW
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:N) (V2 legend)
Impact Subscore: 0.0
Exploitability Subscore: 10.0

Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): None
Additional Information:

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/11/2007)

Red Hat Enterprise Linux by default does respond to ICMP echo requests, although it’s likely that in a production environment those would be filtered by some firewall on entry to your network. However you can happily block ICMP ping responses using iptables if you so wish, but note that there is no known vulnerability in allowing them. For more details, please see:

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