ISC DHCP Server supersede_lease() Function DHCPDISCOVER Packet DoS

This script is Copyright (C) 2006-2016 Tenable Network Security, Inc.


Synopsis :

The remote DHCP server is affected by a denial of service
vulnerability.

Description :

The ISC DHCP server running on the remote host is affected by a denial
of service vulnerability in the supersede_lease() function within file
memory.c due to improper handling of DHCPDISCOVER packets that have a
client-identifier option that is exactly 32 bytes long. An
unauthenticated, remote attacker can exploit this to cause the server
to exit unexpectedly.

See also :

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=380273
https://www.debian.org/security/2006/dsa-1143
https://lists.debian.org/debian-security-announce/2006/msg00232.html

Solution :

Contact the vendor for a patch or upgrade.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 3.7
(CVSS2#E:U/RL:OF/RC:ND)
Public Exploit Available : false

Family: Denial of Service

Nessus Plugin ID: 22159 (dhcp_supersede_lease_dos.nasl)

Bugtraq ID: 19348

CVE ID: CVE-2006-3122