CVE Database


Impact: Moderate
Public: 2012-01-12
Bugzilla: 781242: CVE-2011-4868 dhcp: error in DDNS processing of DHCPv6 leases can cause ISC dhcpd crash


The MITRE CVE dictionary describes this issue as:

The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.

Find out more about CVE-2011-4868 from the MITRE CVE dictionary and NIST NVD.


Not vulnerable. This issue did not affect the versions of dhcp as shipped with Red Hat Enterprise Linux 4, 5, and 6 as they did not include support for enhanced DDNS logging.

CVSS v2 metrics

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

Base Score: 5.0
Base Metrics: AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector: Network
Access Complexity: Low
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

External References

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