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Microsoft Exchange 5.5 LDAP Denial of Service Vulnerabilities

Exchange Server is an email and directory server offered by Microsoft. The LDAP component of Exchange Server reportedly contains a vulnerability that can be exploited to cause a denial of service.

This problem was discovered using the PROTOS project's LDAPv3 test suite, which tests the security of a server by presenting it with a wide variety of sample packets containing unexpected values or illegally formatted data.