National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-2006-1624 Detail


The default configuration of syslogd in the Linux sysklogd package does not enable the -x (disable name lookups) option, which allows remote attackers to cause a denial of service (traffic amplification) via messages with spoofed source IP addresses.

Source:  MITRE      Last Modified:  04/05/2006

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.8 HIGH
(AV:N/AC:L/Au:N/C:N/I:N/A:C) (legend)
Impact Subscore:
Exploitability Subscore:
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Not required to exploit
Impact Type:
Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (12/06/2006)

Red Hat does not consider this to be a security issue. Enabling the -r option is not suggested without the -x option which is clearly documented in the /etc/sysconfig/syslog configuration file.

Official Statement from Mandriva (07/20/2006)

Mandriva does not enable the -r option in syslogd per default, which prevents syslogd from listening for remote events. The -x option is also described in /etc/sysconfig/syslog for those who wish to enable the -r option.

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name Vendor Advisory External Source BUGTRAQ 20060331 DoS-ing sysklogd? Patch; Vendor Advisory External Source BUGTRAQ 20060402 RE: DoS-ing sysklogd? External Source XF sysklogd-sourceip-dos(25672)

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1

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Change History 3 change records found - show changes