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Saturday, April 20, 2024

Microsoft Patch Tuesday, August 2023 Version – Krebs on Safety


Microsoft Corp. at present issued software program updates to plug greater than 70 safety holes in its Home windows working methods and associated merchandise, together with a number of zero-day vulnerabilities at the moment being exploited within the wild.

Six of the failings fastened at present earned Microsoft’s “vital” score, that means malware or miscreants may use them to put in software program on a susceptible Home windows system with none assist from customers.

Final month, Microsoft acknowledged a collection of zero-day vulnerabilities in quite a lot of Microsoft merchandise that have been found and exploited in-the-wild assaults. They have been assigned a single placeholder designation of CVE-2023-36884.

Satnam Narang, senior employees analysis engineer at Tenable, mentioned the August patch batch addresses CVE-2023-36884, which entails bypassing the Home windows Search Safety function.

“Microsoft additionally launched ADV230003, a defense-in-depth replace designed to cease the assault chain related that results in the exploitation of this CVE,” Narang mentioned. “On condition that this has already been efficiently exploited within the wild as a zero-day, organizations ought to prioritize patching this vulnerability and making use of the defense-in-depth replace as quickly as attainable.”

Redmond patched one other flaw that’s already seeing energetic assaults — CVE-2023-38180 — a weak spot in .NET and Visible Studio that results in a denial-of-service situation on susceptible servers.

“Though the attacker would have to be on the identical community because the goal system, this vulnerability doesn’t require the attacker to have acquired consumer privileges,” on the goal system, wrote Nikolas Cemerikic, cyber safety engineer at Immersive Labs.

Narang mentioned the software program large additionally patched six vulnerabilities in Microsoft Change Server, together with CVE-2023-21709, an elevation of privilege flaw that was assigned a CVSSv3 (risk) rating of 9.8 out of a attainable 10, regardless that Microsoft charges it as an vital flaw, not vital.

“An unauthenticated attacker may exploit this vulnerability by conducting a brute-force assault in opposition to legitimate consumer accounts,” Narang mentioned. “Regardless of the excessive score, the assumption is that brute-force assaults gained’t achieve success in opposition to accounts with robust passwords. Nevertheless, if weak passwords are in use, this might make brute-force makes an attempt extra profitable. The remaining 5 vulnerabilities vary from a spoofing flaw and a number of distant code execution bugs, although probably the most extreme of the bunch additionally require credentials for a sound account.”

Consultants at safety agency Automox referred to as consideration to CVE-2023-36910, a distant code execution bug within the Microsoft Message Queuing service that may be exploited remotely and with out privileges to execute code on susceptible Home windows 10, 11 and Server 2008-2022 methods. Microsoft says it considers this vulnerability “much less doubtless” to be exploited, and Automox says whereas the message queuing service is just not enabled by default in Home windows and is much less frequent at present, any machine with it enabled is at vital threat.

Individually, Adobe has issued a vital safety replace for Acrobat and Reader that resolves not less than 30 safety vulnerabilities in these merchandise. Adobe mentioned it isn’t conscious of any exploits within the wild concentrating on these flaws. The corporate additionally issued safety updates for Adobe Commerce and Adobe Dimension.

When you expertise glitches or issues putting in any of those patches this month, please contemplate leaving a remark about it under; there’s a good likelihood different readers have skilled the identical and will chime in right here with helpful ideas.

Further studying:

-SANS Web Storm Heart itemizing of every Microsoft vulnerability patched at present, listed by severity and affected part.

AskWoody.com, which retains tabs on any growing issues associated to the provision or set up of those updates.

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