ISC DHCP Denial of service Vulnerability

A vulnerability has been identified in ISC DHCP, which can be exploited by malicious user to to cause denial of service.

Exploitation of a memory exhaustion bug in libdns is theoretically possible in ISC DHCP 4.2, which uses the library from BIND 9 for Dynamic DNS.

Servers which are targeted by a successful attack will exhaust all memory available to the server process, which is likely to crash the DHCP server and may affect other processes running on the same physical machine when system memory is exhausted.