CVE-2011-4868 Null dereference in n/a

Medium 6.1 Published 15 Jan 2012 Updated 7 Aug 2024

Remote attackers can crash the ISC DHCP server via crafted packets when DDNS and IPv6 are enabled, causing denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2011-4868?

CVE-2011-4868 is a medium-severity vulnerability in n/a, published on 15 Jan 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-399

Which versions are affected by CVE-2011-4868?

It affects 1 product.

Products include Isc Dhcp.

How do I fix CVE-2011-4868?

Upgrade to a fixed version.

Is CVE-2011-4868 being exploited?

There is no known exploitation of CVE-2011-4868 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2011-4868, GHSA-q3c7-f665-h5rw.