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

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

Affected Packages

net-misc/dhcp on all architectures
Affected versions < 3.1.1-r1
Unaffected versions >= 3.1.1-r1

Background

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

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

Release Date
July 14, 2009

Latest Revision
July 14, 2009: 01

Severity
high

Exploitable
remote

Bugzilla entries