The October batch of CVEs published by Microsoft includes 96 vulnerabilities, including 12 fixed earlier this month that affect the Chromium project used by their Edge browser.
Top of mind for many this month is whether Microsoft would patch the two Exchange Server zero-day vulnerabilities (CVE-2022-41040 and CVE-2022-41082) disclosed at the end of September. While Microsoft was relatively quick to acknowledge the vulnerabilities and provide mitigation steps, their guidance has continually changed as the recommended rules to block attack traffic get bypassed. This whack-a-mole approach seems likely to continue until a proper patch addressing the root causes is available; unfortunately, it doesn’t look like that will be happening today. Thankfully, the impact should be more limited than 2021’s ProxyShell and ProxyLogon vulnerabilities due to attackers needing to be authenticated to the server for successful exploitation. Reports are also surfacing about an additional zero-day distinct from these being used in ransomware attacks; however, these have not yet been substantiated.
Microsoft did address two other zero-day vulnerabilities with today’s patches. CVE-2022-41033, an Elevation of Privilege vulnerability affecting the COM+ Event System Service in all supported versions of Windows, has been seen exploited in the wild. CVE-2022-41043 is an Information Disclosure vulnerability affecting Office for Mac that was publicly disclosed but not (yet) seen exploited in the wild.
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