ISC DHCP Server supersede_lease() Function DHCPDISCOVER Packet DoS

medium Nessus Plugin ID 22159
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The remote DHCP server is affected by a denial of service vulnerability.


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.


Contact the vendor for a patch or upgrade.

See Also

Plugin Details

Severity: Medium

ID: 22159

File Name: dhcp_supersede_lease_dos.nasl

Version: 1.14

Type: remote

Published: 8/4/2006

Updated: 7/10/2018

Dependencies: dhcp.nasl

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

Required KB Items: DHCP/Running

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 7/28/2006

Reference Information

CVE: CVE-2006-3122

BID: 19348