GLSA 201606-07: dhcpcd: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	dhcpcd: Multiple vulnerabilities
Date:	06/18/2016
Bugs:	#571152
ID:	201606-07

Synopsis

Multiple vulnerabilities have been found in dhcpcd allowing remote attackers to possibly execute arbitrary code or cause a Denial of Service.

Background

A fully featured, yet light weight RFC2131 compliant DHCP client

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/dhcpcd	< 6.10.0	>= 6.10.0	All supported architectures

Description

A heap overflow can be triggered via malformed DHCP responses in the print_option (via dhcp_envoption1) due to incorrect option length values. These vulnerabilities could also allow remote attackers to trigger an invalid read/crash via malformed DHCP responses.

Impact

Remote attackers could possibly execute arbitrary code with the privileges of the process or cause Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All dhcpcd users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-misc/dhcpcd-6.10.0”

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201606-07.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.