Public Date:
856766: CVE-2012-3955 dhcp: reduced expiration time of an IPv6 lease may cause dhcpd to crash
A flaw was found in the way the dhcpd daemon handled the expiration time of IPv6 leases. If dhcpd's configuration was changed to reduce the default IPv6 lease time, lease renewal requests for previously assigned leases could cause dhcpd to crash.

Find out more about CVE-2012-3955 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue does not affect the version of dhcp as shipped with Red Hat Enterprise Linux 5.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 2.9
Base Metrics AV:A/AC:M/Au:N/C:N/I:N/A:P
Access Vector Adjacent Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux version 6 (dhcp) RHSA-2013:0504 2013-02-20

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 dhcp Not affected