Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 : dhcp3 vulnerability (USN-803-1)

Ubuntu Security Notice (C) 2009-2013 Canonical, Inc. / NASL script (C) 2009-2013 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

It was discovered that the DHCP client as included in dhcp3 did not
verify the length of certain option fields when processing a response
from an IPv4 dhcp server. If a user running Ubuntu 6.06 LTS or 8.04
LTS connected to a malicious dhcp server, a remote attacker could
cause a denial of service or execute arbitrary code as the user
invoking the program, typically the 'dhcp' user. For users running
Ubuntu 8.10 or 9.04, a remote attacker should only be able to cause a
denial of service in the DHCP client. In Ubuntu 9.04, attackers would
also be isolated by the AppArmor dhclient3 profile.

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 39800 ()

Bugtraq ID:

CVE ID: CVE-2009-0692