SB20241112117 - Multiple vulnerabilities in Microsoft Excel

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Use of uninitialized resource (CVE-ID: CVE-2024-49029)

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to usage of uninitialized resources in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file, trigger uninitialized usage of resources and execute arbitrary code on the target system.

2) Heap-based buffer overflow (CVE-ID: CVE-2024-49030)

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

The vulnerability exists due to a boundary error in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

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

3) Out-of-bounds read (CVE-ID: CVE-2024-49028)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Microsoft Excel. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system, leading to arbitrary code execution.

4) Command Injection (CVE-ID: CVE-2024-49026)

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

The vulnerability exists due to improper input validation in Microsoft Excel. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary commands on the target system.

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

5) Use-after-free (CVE-ID: CVE-2024-49027)

The vulnerability allows a remote attacker to compromise vulnerable system.

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

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49029
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49030
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49028
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49026
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49027