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Before yesterdayObscillum

Unraveling the Power of Variant Analysis - Enhance Your Product Security

1 May 2023 at 05:00
Outline Introduction What is Variant Analysis? The Impact of Variant Analysis on Product Security Shifting from Arcane Methods to Comprehensive Variant Analysis Benefits of Variant Analysis for Product Security Conclusion Introduction In today’s interconnected world, businesses face constant cyber threats targeting their products. Product security is a top priority, and more than...

WdNisDrv.sys - Windows Defender Network Stream Filter

25 April 2023 at 05:00
Intro Hello everyone (bee-keepers), I hope you all had an awesome start to the week. Tonight we are going to take a quick moment and look at some generic modifications within the Windows Defender Network Stream Filter (WdNisDrv.sys) kernel driver. I don’t believe this is mapped to any CVE’s or even is a β€˜security’ issue; however, it’s a interesting patch and understanding WHY it was changed i...

CVE-2023-24869 - Remote Procedure Call Runtime Remote Code Execution Vulnerability - Brief Analysis

25 April 2023 at 05:00
EDIT/Updated Info So, after initial analysis and release of this post, I discovered that other CVE’s were reported in relation to RPC, and both usermode & kernelmode compnents relating to RPC were also updated. Additional CVEs: CVE-2023-24908 CVE-2023-24869 CVE-2023-23405 CVE-2023-21708 Usermode Components Updated: rpcss.dll rpchttp.dll rpcrt4.dll Intro Hello everyo...

CVE-2023-23417- Windows Partition Management Driver - Brief Analysis

25 April 2023 at 05:00
Intro Today we are looking into patch diffing a reported Elevation of Privilege (EoP) vulnerability reported within the Windows Partition Management Driver (partmgr.sys). Maybe this information can be helpful for others who are going through all the Patch Tuesday reports and if you are already experienced with GPT disks you will have a much easier time than me as I am still trying to figure it...
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