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isc-dhcp-server -- DoS in DHCPv6

Description:

ISC reports:

Due to improper handling of a DHCPv6 lease structure, ISC DHCP servers that are serving IPv6 address pools AND using Dynamic DNS can encounter a segmentation fault error while updating lease status under certain conditions.

The potential exists for this condition to be intentionally triggered, resulting in effective denial of service to clients expecting service from the affected server.

References:

Affects:

portaudit: isc-dhcp-server -- DoS in DHCPv6

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If you have found a vulnerability in a FreeBSD port not listed in the database, please contact the FreeBSD Security Team. Refer to "FreeBSD Security Information" for more information.


Oliver Eikemeier <eik@FreeBSD.org>