🟢CBA patch

Discover the significance of the CBA patch in our in-depth article. Explore its essential role in software updates, its impact on performance, and the latest developments in the field. Unravel CBA pat

The CBA patch hinders Subject AltName abuses such as ESC1, ESC2, ESC3 and breaks CA Configuration abuses like ESC6, ESC9, ESC10.

CBA patch

• Before the Full Enforcement patch date (Nov 14, 2023 for now available as OOB update) the " key value in the HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services Kdc Registry Subkey can be altered in 3 states to set Certificate-based Authentication checks.

– Disabled: 0 ––> SID Mapping checks are disable

– Compatibility: 1 szOID_NTDS_CA_SECURITY_EXT is checked and validated if present, but if a strong mapping is not present authentication can still proceed but will be logged.

– Full Enforcement Mode: 2 ––> strong SID mapping requirements in client certificates, and if not present authentication fails and will be logged.