Tag Archives: MicrosoftOffice

Microsoft Patch Tuesday July 2023: Vulristics improvements, Office RCE, SFB SmartScreen and Outlook, EoP MSHTML and ERS, other RCEs

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Hello everyone! This episode will be about Microsoft Patch Tuesday for July 2023, including vulnerabilities that were added between June and July Patch Tuesdays.

Alternative video link (for Russia): https://vk.com/video-149273431_456239131

As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities.

Vulristics improvements

I optimized the detection of the vulnerable product and the type of vulnerability based on the description. Now processing already downloaded data (with option --rewrite-flag "False") takes a few seconds. For example, only ~3 seconds for 100 MS Patch Tuesday vulnerabilities . It used to take a few minutes.

What I’ve done:

  1. For Microsoft generated descriptions, e.g. “Microsoft Excel Remote Code Execution Vulnerability”, vulnerability type and product are now directly parsed out of the description, keyword search is not performed.
  2. I rewrote the generic keyword search based on products.json. I have reduced the use of heavy functions without sacrificing the quality of the detections.
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Microsoft Patch Tuesday March 2023: Outlook EoP, MOTW Bypass, Excel DoS, HTTP/3 RCE, ICMP RCE, RPC RCE

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Hello everyone! This episode will be about Microsoft Patch Tuesday for March 2023, including vulnerabilities that were added between February and March Patch Tuesdays.

Alternative video link (for Russia): https://vk.com/video-149273431_456239119

As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities. I took the comments about the vulnerabilities from the Qualys, Tenable, Rapid7, ZDI Patch Tuesday reviews.

Microsoft Patch Tuesday for March 2023 was quite refreshing. 😈

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Microsoft Patch Tuesday October 2022: Exchange ProxyNotShell RCE, Windows COM+ EoP, AD EoP, Azure Arc Kubernetes EoP

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Hello everyone! This episode will be about Microsoft Patch Tuesday for October 2022, including vulnerabilities that were added between September and October Patch Tuesdays. As usual, I use my open source Vulristics project to create the report.

Alternative video link (for Russia): https://vk.com/video-149273431_456239106

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Microsoft Patch Tuesday January 2022

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Hello everyone! This episode will be about Microsoft Patch Tuesday for January 2022. Traditionally, I will use my open source Vulristics tool for analysis. This time I didn’t make any changes to how connectors work. The report generation worked correctly on the first try.

python3.8 vulristics.py --report-type "ms_patch_tuesday" --mspt-year 2022 --mspt-month "January" --rewrite-flag "True"

The only thing I have improved is the detection of types of vulnerabilities and vulnerable products. “Unknown Vulnerability Type” was for two vulnerabilities, so I added the “Elevation Of Privilege” и “Cross-Site Scripting” spelling options. I added detections for 13 products and 19 Windows components. I also corrected the method for sorting vulnerabilities with the same Vulristics score. Previously, such vulnerabilities were sorted by CVE id, now they are sorted by vulnerability type and product. This allows you to see the clusters of similar vulnerabilities.

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Microsoft Patch Tuesday April 2020: my classification script, confusing RCE in Adobe Type Manager and updates for older vulnerabilities

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Easiest task ever?

Making the reviews of Microsoft Patch Tuesday vulnerabilities should be an easy task. All vulnerability data is publicly available. Even better, dozens of reviews have already been written. Just read them, combine and post. Right?

Microsoft Patch Tuesday April 2020: my classification script, confusing RCE in Adobe Type Manager and updates for older vulnerabilities

Not really. In fact it is quite boring and annoying. It may be fun to write about vulnerabilities that were already used in some real attacks. But this is a very small part of all vulnerabilities. What about more than a hundred others? They are like “some vulnerability in some component may be used in some attack (or may be not)”. If you describe each of them, no one will read or listen this.

You must choose what to highlight. And when I am reading the reports from Tenable, Qualys and ZDI, I see that they choose very different groups of vulnerabilities, pretty much randomly.

My classification script

That’s why I created a script that takes Patch Tuesday CVE data from microsoft.com and visualizes it giving me helicopter view on what can be interesting there. With nice grouping by vulnerability type and product, with custom icons for vulnerability types, coloring based on severity, etc.

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