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Category:   Application (Generic)  >   Dhcp Vendors:   ISC (Internet Software Consortium)
DHCP IPC Connection Management Flaw Lets Remote Users on the Local Network Consume Excessive Resources on the Target System
SecurityTracker Alert ID:  1035196
SecurityTracker URL:  http://securitytracker.com/id/1035196
CVE Reference:   CVE-2016-2774   (Links to External Site)
Date:  Mar 8 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 4.1.0 - 4.1-ESV-R12-P1, 4.2.0 - 4.2.8, 4.3.0 - 4.3.3-P1
Description:   A vulnerability was reported in ISC DHCP. A remote user on the local network can consume excessive resources on the target system.

A remote user on the local network can open a large number of TCP connections on the inter-process communications (IPC) and control ports to consume excessive resource on the target system. As a result, the target DHCP service may become unresponsive or fail.

Konstantin Orekhov reported this vulnerability.

Impact:   A remote user on the local network can cause the target DHCP service to become unresponsive or fail.
Solution:   The vendor has issued a fix (4.1-ESV-R13, 4.3.4).

The vendor's advisory is available at:

https://kb.isc.org/article/AA-01354

Vendor URL:  kb.isc.org/article/AA-01354 (Links to External Site)
Cause:   Resource error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Nov 4 2016 (Red Hat Issues Fix) DHCP IPC Connection Management Flaw Lets Remote Users on the Local Network Consume Excessive Resources on the Target System
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Mar 2 2018 (Ubuntu Issues Fix) DHCP IPC Connection Management Flaw Lets Remote Users on the Local Network Consume Excessive Resources on the Target System
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 17.10.



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