Discover and read the best of Twitter Threads about #PatchTuesday

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[#thread 🧵] Last week in #Microsoft #PatchTuesday, a critical vulnerability was patched that theoretically allows attackers to achieve Remote Code Execution on a target #IIS server (CVE-2022-21907). I'll explain how it works in this thread ⬇️ Image
[#thread 🧵(2/9)] A bit of History !

First of all, it is important to know that this vulnerability is a sibling of CVE-2021-31166 disclosed in May of last year. These two vulnerabilities occur in the parsing of HTTP headers of an incoming request, within the http.sys driver. Image
[#thread 🧵(3/9)] But what happens exactly 🤔 ?

To understand what happens in a kernel driver crash, It's important to analyze the kernel #crashdump generated at the moment of the blue screen! Let's open it in #WinDbg and analyze it! Image
Read 10 tweets
#PatchTuesday ICYMI

Microsoft wraps up 2021 with 64 patched vulnerabilities—including Windows 7 fixes...

1/11
While Log4J may have cast a very long shadow over this month, Microsoft has released fixes for 64 more vulnerabilities in its software products, including 16 Chromium-based bugs in the Edge browser that were already patched in updates pushed since last month. 2/11
Some of the remaining fixes apply to versions of Windows stretching back to the end-of-life’d Windows 7...

There are 17 bugs being patched in Windows 7 this month, including three of this month’s seven critical vulnerabilities—all of which are remote code execution bugs. 3/11
Read 11 tweets
WARNING 🔥 CVE-2020-1350 (CVSS 10)

A critical 17-year-old 'wormable' RCE #vulnerability affects Windows DNS Servers (2013 to 2019 editions) that could let unauthenticated hackers gain 'Domain Admin' privileges on the targeted servers.

Details — thehackernews.com/2020/07/window…

#infosec
Researchers confirm the new #Windows vulnerability, dubbed 'SigRed,' is a wormable bug, allowing attackers to launch #malware attacks that can spread from one vulnerable computer to another without any human interaction.

#cybersecurity #sysadmins #microsoft #informationsecurity
If exploited, #SigRed Windows Server #vulnerability enables hackers to intercept and manipulate users' emails and network traffic, make services unavailable, harvest users' credentials, and eventually compromise an organization's entire IT infrastructure.

thehackernews.com/2020/07/window…
Read 8 tweets

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