Microsoft Active Directory Invalid Free and Memory Leak Vulnerabilities ( 10 June 2009 )

1. Active Directory Invalid Free Vulnerability

A remote code execution vulnerability exists in implementations of Active Directory on Microsoft Windows 2000 Server. The vulnerability is due to incorrect freeing of memory when processing specially crafted LDAP or LDAPS requests. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

2. Active Directory Memory Leak Vulnerability

A denial of service vulnerability exists in implementations of Active Directory on Microsoft Windows 2000 Server and Windows Server 2003. The vulnerability also exists in implementations of Active Directory Application Mode (ADAM) when installed on Windows XP Professional and Windows Server 2003. The vulnerability is due to improper memory management during execution of certain types of LDAP or LDAPS requests. An attacker who successfully exploited this vulnerability could cause the affected server to stop responding.