KLA11954 Multiple vulnerabilities in Microsoft Browsers

Multiple vulnerabilities were found in Microsoft browsers. Malicious users can exploit these vulnerabilities to execute arbitrary code, gain privileges.

Below is a complete list of vulnerabilities:

1. A memory corruption vulnerability in Scripting Engine can be exploited remotely to execute arbitrary code.
2. A memory corruption vulnerability in Internet Explorer Browser Helper Object (BHO) can be exploited remotely via specially crafted website to execute arbitrary code.
3. An elevation of privilege vulnerability in WinINet API can be exploited remotely via specially crafted website to gain privileges.
4. An elevation of privilege vulnerability in Windows Start-Up Application can be exploited remotely via specially crafted website to gain privileges.
5. A memory corruption vulnerability in Microsoft Browser can be exploited remotely via specially crafted website to execute arbitrary code.

Original advisories

CVE-2020-1057

CVE-2020-1172

CVE-2020-16884

CVE-2020-1180

CVE-2020-1012

CVE-2020-1506

CVE-2020-0878

Related products

Microsoft-Internet-Explorer

Microsoft-Edge

ChakraCore

CVE list

CVE-2020-0878 warning

CVE-2020-1057 warning

CVE-2020-1172 warning

CVE-2020-16884 warning

CVE-2020-1180 warning

CVE-2020-1012 critical

CVE-2020-1506 high

KB list

4571756

4577041

4570333

4577032

4577049

4577015

4577051

4577066

4574727

4577038

4577010

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

Affected Products

• ChakraCoreMicrosoft Edge (Chromium-based)Internet Explorer 11Microsoft Edge (EdgeHTML-based)Internet Explorer 9