SB2023091318 - Multiple vulnerabilities in Microsoft Office

Description

This security bulletin contains information about 3 vulnerabilities.

1) Security features bypass (CVE-ID: CVE-2023-36767)

CWE-ID: CWE-254 - Security Features

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to security features bypass in Microsoft Office. A remote attacker can bypass the protection in Outlook.

2) Spoofing attack (CVE-ID: CVE-2023-41764)

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in Microsoft Office. A remote attacker can trick a victim to open a specially crafted file and spoof page content.

3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2023-36765)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in Microsoft Office, which leads to security restrictions bypass and privilege escalation.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36767
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-41764
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36765