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HomeCyber SecurityMicrosoft Patch Tuesday, Could 2022 Version – Krebs on Safety

Microsoft Patch Tuesday, Could 2022 Version – Krebs on Safety


Microsoft right now launched updates to repair not less than 74 separate safety issues in its Home windows working techniques and associated software program. This month’s patch batch contains fixes for seven “crucial” flaws, in addition to a zero-day vulnerability that impacts all supported variations of Home windows.

By all accounts, probably the most pressing bug Microsoft addressed this month is CVE-2022-26925, a weak spot in a central part of Home windows safety (the “Native Safety Authority” course of inside Home windows). CVE-2022-26925 was publicly disclosed previous to right now, and Microsoft says it’s now actively being exploited within the wild. The flaw impacts Home windows 7 by way of 10 and Home windows Server 2008 by way of 2022.

Greg Wiseman, product supervisor for Rapid7, mentioned Microsoft has rated this vulnerability as necessary and assigned it a CVSS (hazard) rating of 8.1 (10 being the worst), though Microsoft notes that the CVSS rating might be as excessive as 9.8 in sure conditions.

“This permits attackers to carry out a man-in-the-middle assault to drive area controllers to authenticate to the attacker utilizing NTLM authentication,” Wiseman mentioned. “That is very dangerous information when used along with an NTLM relay assault, probably resulting in distant code execution. This bug impacts all supported variations of Home windows, however Area Controllers ought to be patched on a precedence foundation earlier than updating different servers.”

Wiseman mentioned the latest time Microsoft patched the same vulnerability — final August in CVE-2021-36942 — it was additionally being exploited within the wild below the title “PetitPotam.”

“CVE-2021-36942 was so dangerous it made CISA’s catalog of Recognized Exploited Vulnerabilities,” Wiseman mentioned.

Seven of the issues mounted right now earned Microsoft’s most-dire “crucial” label, which it assigns to vulnerabilities that may be exploited by malware or miscreants to remotely compromise a weak Home windows system with none assist from the person.

Amongst these is CVE-2022-26937, which carries a CVSS rating of 9.8, and impacts companies utilizing the Home windows Community File System (NFS). Development Micro’s Zero Day Initiative notes that this bug may permit distant, unauthenticated attackers to execute code within the context of the Community File System (NFS) service on affected techniques.

“NFS isn’t on by default, but it surely’s prevalent in surroundings the place Home windows techniques are combined with different OSes comparable to Linux or Unix,” ZDI’s Dustin Childs wrote. “If this describes your surroundings, you must undoubtedly check and deploy this patch shortly.”

As soon as once more, this month’s Patch Tuesday is sponsored by Home windows Print Spooler, a core Home windows service that retains spooling out the safety hits. Could’s patches embody 4 fixes for Print Spooler, together with two info disclosure and two elevation of privilege flaws.

“All the flaws are rated as necessary, and two of the three are thought of extra prone to be exploited,” mentioned Satnam Narang, employees analysis engineer at Tenable. “Home windows Print Spooler continues to stay a worthwhile goal for attackers since PrintNightmare was disclosed practically a 12 months in the past. Elevation of Privilege flaws specifically ought to be fastidiously prioritized, as we’ve seen ransomware teams like Conti favor them as a part of its playbook.”

Different Home windows parts that obtained patches this month embody .NET and Visible Studio, Microsoft Edge (Chromium-based), Microsoft Change Server, Workplace, Home windows Hyper-V, Home windows Authentication Strategies, BitLocker, Distant Desktop Consumer, and Home windows Level-to-Level Tunneling Protocol.

Additionally right now, Adobe issued 5 safety bulletins to handle not less than 18 flaws in Adobe CloudFusion, Framemaker, InCopy, InDesign, and Adobe Character Animator. Adobe mentioned it’s not conscious of any exploits within the wild for any of the problems addressed in right now’s updates.

For a extra granular take a look at the patches launched by Microsoft right now and listed by severity and different metrics, take a look at the always-useful Patch Tuesday roundup from the SANS Web Storm Heart. And it’s not a nasty concept to carry off updating for just a few days till Microsoft works out any kinks within the updates: AskWoody.com often has the thin on any patches that could be inflicting issues for Home windows customers.

As at all times, please think about backing up your system or not less than your necessary paperwork and knowledge earlier than making use of system updates. And when you run into any issues with these patches, please drop a word about it right here within the feedback.

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