Daemons linked to TCP Wrappers eat 100% CPU when a line in /etc/hosts.allow or /etc/hosts.deny exceeds 2048 bytes
Issue
- Daemons linked to TCP Wrappers eat 100% CPU when a line in hosts.allow or hosts.deny exceeds 2048 bytes
- Ssh/snmp/vsftp daemon suddenly reached 99% of CPU utilization, the server got hang.
Environment
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 5
- tcp_wrappers
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