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Microsoft Patch Tuesday: 84 Home windows Vulns, Together with Already-Exploited Zero-Day

By Ryan Naraine on July 12, 2022

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Microsoft has issued an pressing Patch Tuesday bulletin to warn of in-the-wild zero-day exploitation of a privilege escalation flaw within the Home windows working system.

The important vulnerability, flagged as CVE-2022-22047, exists within the Consumer/Server Runtime Subsystem (csrss.exe) and carries a CVSS severity score of seven.8.

“An attacker who efficiently exploited this vulnerability may achieve SYSTEM privileges,” Redmond’s safety response workforce stated in an advisory.

The software program large didn’t present any extra particulars of the stay assaults exterior of a notification that the difficulty has not been publicly disclosed.  The corporate didn’t present IOCs (indicators of compromise) to assist defenders hunt for indicators of compromise.

Microsoft credited its personal MSTIC (Microsoft Menace Intelligence Heart) and MSRC (Microsoft Safety Response Heart) items with the invention of the zero-day exploitation.

[ READ: Adobe Patch Tuesday: Critical Flaws in Acrobat, Reader, Photoshop ]

The Home windows CSRSS privilege escalation flaw headlines a really busy Patch Tuesday that features fixes for at the very least 84 documented vulnerabilities throughout the Home windows ecosystem.

In keeping with the Zero Day Initiative (ZDI), the July Patch Tuesday rollout didn’t embody any fixes for the latest Pwn2Own competitors the place hackers exploited unpatched flaws in Home windows 11 and Microsoft Groups.  At that occasion, Pwn2Own individuals demonstrated six Home windows 11 privilege escalation flaws and three Microsoft Groups exploit chains.

The 84 documented vulnerabilities (counting by CVE) have an effect on a variety of OS elements, together with Microsoft Workplace, BitLocker, Microsoft Defender, Home windows Azure and Home windows Home windows Hyper-V.

In keeping with Microsoft’s documentation, four of the 84 vulnerabilities carry the very best “important” severity score.  The remaining bugs are rated “essential” in severity.

[ READ: ICS Patch Tuesday: Siemens, Schneider Electric Address 59 Vulnerabilities ]

Redmond’s patches come simply hours after software program maker Adobe patched 22 documented vulnerabilities in a variety of desktop merchandise, some critical sufficient to trigger arbitrary code execution assaults.

The patches, accessible for Adobe Acrobat and Reader for Home windows and macOS, have an effect on Adobe Acrobat/Reader, Adobe Photoshop, Adobe RoboHelp and Adobe Character Animator.

In keeping with an advisory from Adobe, the Acrobat/Reader replace deal with  a number of important vulnerabilities that would expose pc customers to arbitrary code execution and reminiscence leak assaults.

Adobe stated it was not conscious of in-the-wild exploits previous to the provision of patches. 

Associated: ICS Patch Tuesday: Siemens, Schneider Electrical Deal with 59 Vulnerabilities

Associated: Patch Tuesday: Microsoft Calls Consideration to ‘Wormable’ Home windows

Associated: Adobe Patch Tuesday: Important Flaws in Acrobat, Reader, Photoshop

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