SB2021020929 - Multiple vulnerabilities in Microsoft Excel
Published: February 9, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2021-24070)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Excel. A remote attacker can host a website, trick a victim to open the specially crafted file and execute arbitrary code on the target system.
2) Input validation error (CVE-ID: CVE-2021-24069)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Excel. A remote attacker can host a website, trick a victim to open the specially crafted file and execute arbitrary code on the target system.
3) Input validation error (CVE-ID: CVE-2021-24068)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Excel. A remote attacker can host a website, trick a victim to open the specially crafted file and execute arbitrary code on the target system.
4) Input validation error (CVE-ID: CVE-2021-24067)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Excel. A remote attacker can host a website, trick a victim to open the specially crafted file and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24070
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24069
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24068
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24067