CVE-2007-4321

Description

fail2ban 0.8 and earlier 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 client protocol version identification containing an IP address string, a different vector than CVE-2006-6302.

References

http://www.securityfocus.com/bid/25117

http://www.ossec.net/en/attacking-loganalysis.html

http://www.debian.org/security/2008/dsa-1456

http://security.gentoo.org/glsa/glsa-200707-13.xml

http://secunia.com/advisories/28374

http://secunia.com/advisories/23237

http://osvdb.org/42484

http://bugs.gentoo.org/show_bug.cgi?id=181214

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3