SB2021071357 - Multiple vulnerabilities in Microsoft Windows MSHTML Platform

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Code Injection (CVE-ID: CVE-2021-34497)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in the Windows MSHTML Platform. A remote attacker can trick a victim to visit a specially crafted server share or website and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Code Injection (CVE-ID: CVE-2021-34447)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in the Windows MSHTML Platform. A remote attacker can trick a victim to visit a specially crafted server share or website and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34497
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34447