Gentoo Logo

ISC DHCP: Denial of Service


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201401-05 / dhcp
Release Date January 06, 2014
Latest Revision January 06, 2014: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/dhcp < 4.2.5_p1 >= 4.2.5_p1 All supported architectures

Related bugreports: #463848


A memory exhaustion vulnerability in ISC DHCP could lead to Denial of Service.

2.  Impact Information


ISC DHCP is a Dynamic Host Configuration Protocol (DHCP) client/server.


ISC DHCP is vulnerable to a memory exhaustion attack involving regular expressions sent by DHCP clients.


A remote attacker could send a specially crafted request from a malicious or spoofed client, potentially leading to a Denial of Service condition.

3.  Resolution Information


There is no known workaround at this time.


All ISC DHCP users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/dhcp-4.2.5_p1"

4.  References


Page updated January 06, 2014

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.

Copyright 2001-2014 Gentoo Foundation, Inc. Questions, Comments? Contact us.