A security advisory (ADV200001) has been published by technology giant Microsoft that includes mitigations for a zero-day remote code execution (RCE) susceptibility, traced as CVE-2020-0674, impacting Internet Explorer.
Software established that the CVE-2020-0674 zero-day susceptibility has been vigorously exploited in the wild.
“A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user.” reads the advisory published by Microsoft. “An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.”
An invader could abuse the fault to gain the same user consents as the user logged into the affected Windows device. If the user is logged on with administrative consents, the attacker can abuse the fault to take full control of the system.
The CVE-2020-0674 fault could be activated by deceiving victims into visiting a website hosting a particularly made content intended to abuse the problem through Internet Explorer.
Microsoft declared that it is presently working on a patch to address the susceptibility, the company will probably issue an out-of-band update because invaders are already abusing the flaw in the wild.
Microsoft proposes limiting access to JScript.dll using the next workaround to alleviate this zero-day flaw.
The company warns that executing these mitigation might influence the functionality for components or features that use the jscript.dll.
“Implementing these steps might result in reduced functionality for components or features that rely on jscript.dll. To be fully protected, Microsoft recommends the update be installed as soon as possible. Please revert the mitigation steps before installing the update to return to a full state.” continues the advisory.