SB2022041224 - Multiple vulnerabilities in Microsoft Excel

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2022-26901)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when parsing Excel files. A remote attacker can trick the victim to open a specially crafted Excel file, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

2) Code Injection (CVE-ID: CVE-2022-24473)

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

The vulnerability exists due to improper input validation in Microsoft Excel. A remote attacker can 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-2022-26901
• https://www.zerodayinitiative.com/advisories/ZDI-22-809/
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-24473