Invisible Display Name Exploit in Microsoft Exchange

Invisible Display Name Exploit in Microsoft Exchange

CVE-2019-1084 · MEDIUM Severity

AV:N/AC:L/AU:S/C:P/I:N/A:N

An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. This security update addresses the issue by validating display names upon creation in Microsoft Exchange, and by rendering invalid display names correctly in Microsoft Outlook clients., aka 'Microsoft Exchange Information Disclosure Vulnerability'.

Learn more about our Cis Benchmark Audit For Microsoft Exchange Server.