GLSA 201401-05: ISC DHCP: Denial of Service

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

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.

License

Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

Thank you!