TLS SNI Hostname Validation Flaw in Osquery by Facebook

CVE-2020-1887

What is CVE-2020-1887?

A security flaw exists in Osquery, a tool developed by Facebook, where incorrect validation of the Transport Layer Security (TLS) Server Name Indication (SNI) hostname has been identified. This imperfection allows potential attackers to execute Man-in-the-Middle (MITM) attacks, intercepting and tampering with osquery traffic, particularly in environments lacking a properly configured root chain of trust. Users of Osquery versions later than 2.9.0 and earlier than 4.2.0 are urged to be aware of this vulnerability and to configure their systems accordingly.

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