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Microsoft Emergency Patch – IE Zero-day Vulnerability Let Hackers Execute Arbitrary Code Remotely in Windows PC

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Malware protection

Microsoft issued an emergency patch for Internet Explorer RCE 0-day vulnerability that allows attackers to execute arbitrary code remotely to gain access the system remotely.

A scripting engine memory corruption vulnerability that uncovered in Internet explorer by Clément Lecigne of Google’s Threat Analysis Group.

Internet Explorer is one of the widely used web browsers developed by Microsoft and included in the Microsoft Windows line of operating systems, starting in 1995.

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Based on the Browser Market Share report, Internet Explorer is a 3rd web browser with 7.47% market share and is used by millions of users around the world including within corporate networks. 

The vulnerability (CVE-2019-1367) could corrupt the memory and let the attacker perform the Successful exploitation to execute the remote code in the context of users privilege.

During the attack, if the users logged the windows as admin, the attacker could take complete control of the system and perform various activities such as view, change, or delete data; or create new accounts with full user rights.

To perform the attack, threat actors convince the users through various medium such as email to view the specially crafted website that hosted by the attack, in such a way attacker exploit the vulnerable system and take a complete control remotely.

The security update issued by Microsoft addresses the vulnerability by modifying how the scripting engine handles objects in memory.

Defender Denial of Service Vulnerability

Along with the IE 0-day vulnerability, Microsoft patched another Denial of Service Vulnerability that affected the Windows defender due to improperly handles files.

According to Microsoft (CVE-2019-1255 ) ” An attacker could exploit the vulnerability to prevent legitimate accounts from executing legitimate system binaries. “

Before performing the attacker, threat actors required to execute the victim’s windows machine

The vulnerability disclosed by Tencent Security Xuanwu Lab and you can learn how to update the Malware Protection Engine here.

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Balaji
Balaji
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

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