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Microsoft September 2021 Patch Tuesday, (Tue, Sep 14th)

This month we got patches for vulnerabilities. Of these, are critical, were previously disclosed and is being exploited according to Microsoft.

As expected, Microsoft released the patch for the zero-day affecting MSHTML that could allow an attacker to execute remote code on an affected system. According to the advisory, an attacker could craft a malicious ActiveX control to be used by a Microsoft Office document that hosts the browser rendering engine. The attacker would then have to convince the user to open the malicious document. The CVSS for this vulnerability is 8.80 (out of 10).

See my dashboard for a more detailed breakout: https://patchtuesdaydashboard.com/

September Early Security Releases

Description
CVE Disclosed Exploited Exploitability (old versions) current version Severity CVSS Base (AVG) CVSS Temporal (AVG)
Chromium: CVE-2021-30606 Use after free in Blink
%%cve:2021-30606%% No No    
Chromium: CVE-2021-30607 Use after free in Permissions
%%cve:2021-30607%% No No    
Chromium: CVE-2021-30608 Use after free in Web Share
%%cve:2021-30608%% No No    
Chromium: CVE-2021-30609 Use after free in Sign-In
%%cve:2021-30609%% No No    
Chromium: CVE-2021-30610 Use after free in Extensions API
%%cve:2021-30610%% No No    
Chromium: CVE-2021-30611 Use after free in WebRTC
%%cve:2021-30611%% No No    
Chromium: CVE-2021-30612 Use after free in WebRTC
%%cve:2021-30612%% No No    
Chromium: CVE-2021-30613 Use after free in Base internals
%%cve:2021-30613%% No No    
Chromium: CVE-2021-30614 Heap buffer overflow in TabStrip
%%cve:2021-30614%% No No    
Chromium: CVE-2021-30615 Cross-origin data leak in Navigation
%%cve:2021-30615%% No No    
Chromium: CVE-2021-30616 Use after free in Media
%%cve:2021-30616%% No No    
Chromium: CVE-2021-30617 Policy bypass in Blink
%%cve:2021-30617%% No No    
Chromium: CVE-2021-30618 Inappropriate implementation in DevTools
%%cve:2021-30618%% No No    
Chromium: CVE-2021-30619 UI Spoofing in Autofill
%%cve:2021-30619%% No No    
Chromium: CVE-2021-30620 Insufficient policy enforcement in Blink
%%cve:2021-30620%% No No    
Chromium: CVE-2021-30621 UI Spoofing in Autofill
%%cve:2021-30621%% No No    
Chromium: CVE-2021-30622 Use after free in WebApp Installs
%%cve:2021-30622%% No No    
Chromium: CVE-2021-30623 Use after free in Bookmarks
%%cve:2021-30623%% No No    
Chromium: CVE-2021-30624 Use after free in Autofill
%%cve:2021-30624%% No No    
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
%%cve:2021-26436%% No No Less Likely Less Likely Important 6.1 5.3
%%cve:2021-36930%% No No Less Likely Less Likely Important 5.3 4.6
Microsoft Edge (Chromium-based) Tampering Vulnerability
%%cve:2021-38669%% No No Less Likely Less Likely Important 6.4 5.6
Microsoft Edge for Android Information Disclosure Vulnerability
%%cve:2021-26439%% No No Moderate 4.6 4.0
Microsoft Edge for Android Spoofing Vulnerability
%%cve:2021-38641%% No No Less Likely Less Likely Important 6.1 5.3
Microsoft Edge for iOS Spoofing Vulnerability
%%cve:2021-38642%% No No Less Likely Less Likely Important 6.1 5.3
Microsoft MSHTML Remote Code Execution Vulnerability
%%cve:2021-40444%% Yes Yes Detected Detected Important 8.8 7.9


Renato Marinho
Morphus Labs| LinkedIn|Twitter

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