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Debian: 2184-1: isc-dhcp: denial of service

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Special Forums Cybersecurity Security Advisories (RSS) Debian: 2184-1: isc-dhcp: denial of service
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Old 03-07-2011
Debian: 2184-1: isc-dhcp: denial of service
LinuxSecurity.com: It was discovered that the ISC DHCPv6 server does not correctly process requests which come from unexpected source addresses, leading to an assertion failure and a daemon crash. [More...]

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LEARN ABOUT SUSE

dhcp6c

dhcp6c(8)						      System Manager's Manual							 dhcp6c(8)

NAME

       dhcp6c - DHCPv6 client daemon

SYNOPSIS

       dhcp6c [ -vfI ] [ -r all | <address...> ] [ -R <address...> ] [ -P <address...> ] [ -c pathspec ] <interface>

DESCRIPTION

       dhcp6c is an implementation of the DHCPv6 client.

       Using DHCPv6 messages and DHCPv6 options, dhcp6c is used to request and configure IPv6 addresses and host network configuration information
       (e.g., DNS) for a network interface from the DHCPv6 server. It can also be used as a requesting router to request and configure Prefix Del-
       egation for a subnet.

       The assigned IPv6 addresses and prefixes are saved as /var/lib/dhcpv6/client6.leasesXXXXXX; this file is used to request the same addresses
       and prefixes from the DHCPv6 server.  Each dhcp6c client  has  a  client  DHCP  Unique  Identifier  (DUID);  the  DUID  file  is  saved	as
       /var/lib/dhcpv6/dhcp6c_duid.  The dhcp6c client configuration is defined in /etc/dhcp6c.conf.

       Interface names are specified according to your operating system's conventions.	On Linux, this is typically eth0, eth1, and so on.

OPTIONS

       -c pathspec
	      Specifies the configuration file for dhcp6c

       -v     Enables dhcp6c to print debugging messages.

       -f     Enables dhcp6c to work as a foreground application.  This option is helpful for debugging.

       -I     Allows dhcp6c to request network information only.  Do not configure the interface.

       -r all | <addresses...>
	      Allows dhcp6c to release the addresses specified.  This option is used only when releasing addresses explicitly.

       -R <addresses...>
	      Allows dhcp6c to request the specified named addresses.

       -P <addresses...>
	      Allows dhcp6c to request the specified prefix delegation addresses.

FILES

       /etc/dhcp6c.conf
	      Contains DHCPv6 client configuration information.

       /var/lib/dhcpv6/dhcp6c_duid
	      Contains DHCPv6 client DUID.

       /var/lib/dhcpv6/client6_leasesXXXXXX
	      Contains DHCPv6 client assigned IPv6 addresses and prefixes.

ERRORS

       Check /var/log/messages if there are errors.

SEE ALSO

       dhcp6c.conf(5)

BUGS

       Report bugs via http://fedorahosted.org/dhcpv6/

AUTHORS

       See http://fedorahosted.org/dhcpv6/wiki/Authors

																	 dhcp6c(8)