Microsoft is addressing 90 vulnerabilities this November 2024 Patch Tuesday. Microsoft has evidence of in-the-wild exploitation and/or public disclosure for four of the vulnerabilities published today, although as with last month’s batch, it does not evaluate any of these zero-day vulnerabilities as critical severity (yet). Of those four, Microsoft lists two as exploited in the wild, and both of these are now listed on CISA KEV. Microsoft is aware of some level of public disclosure for three. Microsoft is also patching two further critical remote code execution (RCE) vulnerabilities today. Two browser vulnerabilities have already been published separately this month, and are not included in the total.
Active Directory Certificate Service: zero-day EoP aka EKUwu
CVE-2024-49019 describes an elevation of privilege vulnerability in Active Directory Certificate Services. While the vulnerability only affects assets with the Windows Active Directory Certificate Services role, an attacker who successfully exploits this vulnerability could gain domain admin privileges, so that doesn’t offer much comfort. Unsurprisingly, given the potential prize for attackers, Microsoft assesses future exploitation as more likely. Vulnerable PKI environments are those which include published certificates created using a version 1 certificate template with the source of subject name set to "Supplied in the request" and Enroll permissions granted to a broader set of accounts. Microsoft does not obviously provide any means of determining the certificate template version used to create a certificate, although the advisory does offer recommendations for anyone hoping to secure certificate templates.
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