GLSA 201401-05: ISC DHCP: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	ISC DHCP: Denial of Service
Date:	01/06/2014
Bugs:	#463848
ID:	201401-05

Synopsis

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

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/dhcp	< 4.2.5_p1	>= 4.2.5_p1	All supported architectures

Description

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

Impact

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

Workaround

There is no known workaround at this time.

Resolution

All ISC DHCP users should upgrade to the latest version:

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

References

CVE-2013-2494

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201401-05.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.