GLSA 200907-12: ISC DHCP: dhcpclient Remote execution of arbitrary code

http://security.gentoo.org/

Severity:	high
Title:	ISC DHCP: dhcpclient Remote execution of arbitrary code
Date:	07/14/2009
Bugs:	#277729
ID:	200907-12

Synopsis

A buffer overflow in dhclient as included in the ISC DHCP implementation allows for the remote execution of arbitrary code with root privileges.

Background

ISC DHCP is the reference implementation of the Dynamic Host Configuration Protocol as specified in RFC 2131.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/dhcp	< 3.1.1-r1	>= 3.1.1-r1	All supported architectures

Description

The Mandriva Linux Engineering Team has reported a stack-based buffer overflow in the subnet-mask handling of dhclient.

Impact

A remote attacker might set up a rogue DHCP server in a victim's local network, possibly leading to the execution of arbitrary code with root privileges.

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-3.1.1-r1"

References

CVE-2009-0692

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200907-12.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.