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<div style="margin:0px;font-size:14.67px;background-color:white">I hope everyone is doing well!</div>
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<div style="margin:0px;font-size:14.67px;background-color:white">Below is the entry for today.</div>
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<div style="margin:0px;font-size:14.67px;background-color:white">08/10/2021 - Diary entry #323<br>
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Today Microsoft released the August 2021 Patch Tuesday, containing the fixes for 44 vulnerabilities in Windows, plus 7 others in Microsoft Edge. From those, seven are classified as critical and 37 as important.
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<div>This patch is extremely important, as it fixes PrintSpooler vulnerabilities required by PrintNightmare exploit. Covered in our Daily Diaries #295, #296 and #300, PrintNightmare is an exploit that was publicly released on Github by accident. It abuses vulnerabilities
in PrintSpooler, windows printing service, to escalate privilege up to system, and, in a few architectures, it can also be used to achieve Remote Code Execution. After the patch, Windows now requires users to have administrative privileges to install print
drivers using the Point and Print Windows feature.</div>
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This patch also fixes CVE-2021-36942, used in PetitPotam attack that allows an attacker to take over a Windows domain, and CVE-2021-36948, a Privilege Escalation Vulnerability that was found being exploited in the wild. As usual, we highly recommend anyone
using Microsoft's products to verify if the latest update was already applied, as it fixes all the bugs we mentioned and more.
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<span style="margin:0px;font-size:14.67px;background-color:white">Kind Regards,</span></div>
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<strong>Felipe Duarte Domingues</strong><br>
Security Researcher<br>
<strong>Appgate</strong></p>
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E:<span> </span><font color="#228ebe"><a href="mailto:felipe.duarte@appgate.com" title="mailto:felipe.duarte@appgate.com">felipe.duarte@appgate.com</a></font><br>
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