ISC released new bug-fixing versions (3.1-ESV-R3, 4.1-ESV-R3, 4.2.2 ) of DHCP server to ignore malicious packet that can halt server. All previous versions in 3.1, 4.1, and 4.2 lines are affected. The vulnerabilities are known as CVE-2011-2748 and CVE-2011-2749. http://www.isc.org/software/dhcp/advisories/cve-2011-2748
*** This bug has been marked as a duplicate of bug 378799 ***
*** Bug 379235 has been marked as a duplicate of this bug. ***