VULNERABILITY INTELLIGENCE

CVE-2006-6301

CVSS score5 MEDIUM
EPSS probability1.88%
CISA KEVNot currently listed
Published2006-12-06
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:P

Description

DenyHosts 2.5 does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a login name containing certain strings with an IP address, which is not properly handled by a regular expression.

Primary references