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<p class="MsoNormal"><a name="_Hlk122600425">Good afternoon,<span style="mso-ligatures:none"><o:p></o:p></span></a></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">The SOC Services team is reporting on the vulnerability:</span><span style="mso-bookmark:_Hlk122600425"><span style="font-family:"Arial",sans-serif;mso-ligatures:none">
</span><b>CVE-2023-36033: Microsoft Windows Desktop Window Manager (DWM) Core Library Privilege Escalation, CVE-2023-36025:</b>
<b>Microsoft Windows SmartScreen Security Feature Bypass Vulnerability, and CVE-2023-36036:</b>
<b>Microsoft Windows Cloud Files Mini Filter Driver Privilege Escalation Vulnerability</b>. Due to its high visibility and knowledge of the software installed in the state environment, we are providing this in-depth information:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u>History</u></b>: On November 14, 2023, CISA added three (CVE-2023-36033, CVE-2023-36025, and CVE-2023-36036) Microsoft vulnerabilities to the Known Exploited Vulnerabilities Catalog. All of
the vulnerabilities were fixed in the November 2023 patch Tuesday.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><span style="background:yellow;mso-highlight:yellow"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">Microsoft has provided the following security advisories:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"></span><a href="https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-36036"><span style="mso-bookmark:_Hlk122600425">https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-36036</span><span style="mso-bookmark:_Hlk122600425"></span></a><span style="mso-bookmark:_Hlk122600425"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"></span><a href="https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-36033"><span style="mso-bookmark:_Hlk122600425">https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-36033</span><span style="mso-bookmark:_Hlk122600425"></span></a><span style="mso-bookmark:_Hlk122600425"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"></span><a href="https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-36025"><span style="mso-bookmark:_Hlk122600425">https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-36025</span><span style="mso-bookmark:_Hlk122600425"></span></a><span style="mso-bookmark:_Hlk122600425"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><span style="background:yellow;mso-highlight:yellow"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u>Intelligence</u></b>: As of November 14, 2023, the vulnerability has been confirmed as being exploited in the wild.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u><span style="background:yellow;mso-highlight:yellow"><o:p><span style="text-decoration:none"> </span></o:p></span></u></b></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u>Workarounds:</u></b> There are no workarounds at this time.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u><span style="background:yellow;mso-highlight:yellow"><o:p><span style="text-decoration:none"> </span></o:p></span></u></b></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u>How it works</u></b>: <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">CVE-2023-36036: Microsoft has not released information as to how the vulnerability has been exploited.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">CVE-2023-36033: Microsoft has not released information as to how the vulnerability has been exploited.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">CVE-2023-36025: Microsoft has provided the following statement, “The user would have to click on a specially crafted Internet Shortcut (.URL) or a hyperlink pointing to an Internet Shortcut file
to be compromised by the attacker.”.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><span style="background:yellow;mso-highlight:yellow"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u>Post-Exploit</u></b>:
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">CVE-2023-36036: Upon successful exploitation of the vulnerability, a threat actor could gain SYSTEM privileges.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">CVE-2023-36033: Upon successful exploitation of the vulnerability, a threat actor could gain SYSTEM privileges.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425">CVE-2023-36025: The attacker would be able to bypass Windows Defender SmartScreen checks and their associated prompts.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><span style="background:yellow;mso-highlight:yellow"><o:p> </o:p></span></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="mso-bookmark:_Hlk122600425">As of November 14, 2023, Tenable does not have any plugins for these vulnerabilities and nothing in the plugin pipeline.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><b><u>Recommended Actions</u></b>:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"> <o:p></o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="mso-list:l1 level1 lfo4"><span style="mso-bookmark:_Hlk122600425">Verify host has not been compromised before applying patches.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo4"><span style="mso-bookmark:_Hlk122600425">Apply appropriate updates provided by vendor to vulnerable systems immediately after appropriate testing.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l1 level1 lfo4"><span style="mso-bookmark:_Hlk122600425">Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l1 level1 lfo4"><span style="mso-bookmark:_Hlk122600425">Apply the Principle of Least Privilege to all systems and services.<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk122600425"><o:p> </o:p></span></p>
<span style="mso-bookmark:_Hlk122600425"></span>
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<p class="MsoNormal" style="line-height:105%"><span style="color:#1F497D"><img border="0" width="121" height="87" style="width:1.2583in;height:.9083in" id="Picture_x0020_2" src="cid:image001.png@01DA1701.0351CE70"><span style="mso-ligatures:none"><o:p></o:p></span></span></p>
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<p class="MsoNormal" style="line-height:105%"><b><span style="mso-ligatures:none">Cyber Security Services<o:p></o:p></span></b></p>
<p class="MsoNormal" style="line-height:105%"><span style="mso-ligatures:none">State of Oregon Cyber Security Services<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="mso-ligatures:none">Enterprise Information Services | SOC<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="mso-ligatures:none">Cyber Security Services (CSS)<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:105%"><span style="mso-ligatures:none">SOC Hotline: (503) 378-5930 | SOC Services (503) 373-0378<span style="color:#1F497D"><o:p></o:p></span></span></p>
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<p class="MsoNormal" style="line-height:105%"><i><span style="color:#2E74B5;mso-ligatures:none">“Ensuring user-friendly, reliable and secure state technology systems that serve Oregonians.”<o:p></o:p></span></i></p>
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