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Category:   Application (Generic)  >   Dhcp Vendors:   ISC (Internet Software Consortium)
ISC DHCP Can Be Crashed By Remote Users with a Specially Crafted DHCPOFFER Packet
SecurityTracker Alert ID:  1016755
SecurityTracker URL:  http://securitytracker.com/id/1016755
CVE Reference:   CVE-2006-3122   (Links to External Site)
Date:  Aug 25 2006
Impact:   Denial of service via network
Exploit Included:  Yes  
Version(s): 2.0pl5
Description:   A vulnerability was reported in ISC's DHCP. A remote user can cause denial of service conditions.

A remote user can send a specially crafted DHCPOFFER packet that is exactly 32 bytes long to cause the target DHCP service to crash.

The flaw resides in the supersede_lease() function in memory.c.

DHCP version 3 servers are not affected.

Andrew Steets reported this vulnerability on July 28, 2006.

Impact:   A remote user can cause the DHCP service to crash.
Solution:   No solution was available at the time of this entry. DHCP version 3 is reportedly not affected.
Vendor URL:  www.isc.org/sw/dhcp/ (Links to External Site)
Cause:   Exception handling error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Aug 25 2006 (OpenBSD Issues Fix) ISC DHCP Can Be Crashed By Remote Users with a Specially Crafted DHCPOFFER Packet
OpenBSD has issued a fix for OpenBSD 3.8 and 3.9.



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