Microsoft Releases Out-of-Band Patch for Internet Explorer Remote Code Execution Vulnerability (CVE-

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<p>Clement Lecigne of Google’s Threat Analysis Group has reported exploitation of an Internet Explorer vulnerability, CVE-2018-8653, prompting an out-of-band patch from Microsoft.</p>

<h2>Background</h2>

<p>On December 19, Microsoft released a critical out-of-band (OOB) patch for a remote code execution (RCE) vulnerability in Internet Explorer (IE). This vulnerability affects all versions of IE including Windows 7, Windows 8.1, Windows 10, Windows Server 2008 (Internet Explorer 9), Windows Server 2012 (Internet Explorer 10), Windows Server 2016 and Windows Server 2019.</p>

<h2>Vulnerability details</h2>

<p>A remote code execution vulnerability was found in IE’s memory handling in Jscript.dll. An attacker could corrupt IE’s memory in a way that allows code execution on the affected system. The attacker would have the same rights as the active user, including administrators.</p>

<p>An attacker would have to convince a user to visit a malicious website, which could then exploit this vulnerability, executing code on the user’s local machine. Email- or social media-based spear phishing attempts are the most likely methods for exploitation.</p>

<p>Microsoft hasn’t given any specific details, but the advisory does show that the vulnerability has already been publicly exploited. This increases the likelihood of additional exploitation against unpatched systems in the future.</p>

<h2>Urgently required actions</h2>

<p>Organizations and individual users are strongly encouraged to apply the available patches, or relevant workaround, provided by Microsoft from its advisory page <a href=”https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2…

<h2>Identifying affected systems</h2>

<p>A list of Nessus plugins to identify this vulnerability will appear <a href=”https://www.tenable.com/plugins/search?q=cves%3A(%22CVE-2018-8653%22)&sort=&page=1″>here</a> as they’re released.</p>

<h2>Get more information</h2>

<ul><li><a href=”https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2… Advisory for CVE-2018-8653</a></li></ul>

<p><b><i>Learn more about <a href=”https://www.tenable.com/products”>Tenable</a>, the first Cyber Exposure platform for holistic management of your modern attack surface. Get a <a href=”https://www.tenable.com/products/tenable-io/vulnerability-management/eva… 60-day trial</a> of Tenable.io Vulnerability Management. </i></b></p>

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About Tenable
Tenable™, Inc. is the Cyber Exposure company. Over 24,000 organizations of all sizes around the globe rely on Tenable to manage and measure their modern attack surface to accurately understand and reduce cyber risk. As the creator of Nessus®, Tenable built its platform from the ground up to deeply understand assets, networks and vulnerabilities, extending this knowledge and expertise into Tenable.io™ to deliver the world’s first platform to provide live visibility into any asset on any computing platform. Tenable customers include over 50 percent of the Fortune 500, large government agencies and organizations across the private and public sectors. Learn more at tenable.com.
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