fail2ban 0.7.4 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 login name containing certain strings with an IP address.
Link | Tags |
---|---|
http://security.gentoo.org/glsa/glsa-200702-05.xml | vendor advisory |
http://bugs.gentoo.org/show_bug.cgi?id=157166 | |
http://secunia.com/advisories/23237 | third party advisory vendor advisory |
http://secunia.com/advisories/24184 | third party advisory vendor advisory |
https://exchange.xforce.ibmcloud.com/vulnerabilities/30739 | vdb entry |
http://www.securityfocus.com/bid/21469 | vdb entry |
http://www.vupen.com/english/advisories/2006/4877 | vdb entry |