This month’s Patch Tuesday is on the lighter side, with 79 CVEs being fixed by Microsoft (including 16 CVEs affecting Chromium, used by their Edge browser, that were already available). One zero-day was announced: CVE-2022-37969 is an elevation of privilege vulnerability affecting the Log File System Driver in all supported versions of Windows, allowing attackers to gain SYSTEM-level access on an asset they’ve already got an initial foothold in. Interestingly, Microsoft credits four separate researchers/organizations for independently reporting this, which may be indicative of relatively widespread exploitation. Also previously disclosed (in March), though less useful to attackers, Microsoft has released a fix for CVE-2022-23960 (aka Spectre-BHB) for Windows 11 on ARM64.
Some of the more noteworthy vulnerabilities this month affect Windows systems with IPSec enabled. CVE-2022-34718 allows remote code execution (RCE) on any Windows system reachable via IPv6; CVE-2022-34721 and CVE-2022-34722 are RCE vulnerabilities in the Windows Internet Key Exchange (IKE) Protocol Extensions. All three CVEs are ranked Critical and carry a CVSSv3 base score of 9.8. Rounding out the Critical RCEs this month are CVE-2022-35805 and CVE-2022-34700, both of which affect Microsoft Dynamics (on-premise) and have a CVSSv3 base score of 8.8. Any such systems should be updated immediately.
SharePoint administrators should also be aware of four separate RCEs being addressed this month. They’re ranked Important, meaning Microsoft recommends applying the updates at the earliest opportunity. Finally, a large swath of CVEs affecting OLE DB Provider for SQL Server and the Microsoft ODBC Driver were also fixed. These require some social engineering to exploit, by convincing a user to either connect to a malicious SQL Server or open a maliciously crafted .mdb (Access) file.
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