SB2021081035 - Memory corruption in Microsoft Scripting Engine
Published: August 10, 2021 Updated: February 14, 2022
Security Bulletin ID
SB2021081035
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2021-34480)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to incorrect JIT optimization in jscript9.dll in the Scripting Engine. A remote attacker can trick a victim to open a specially crafted file or visit a malicious website, trigger memory corruption 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.