SB2023041210 - Multiple vulnerabilities in Microsoft Message Queuing

Description

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2023-21769)

CWE-ID: CWE-20 - Improper input validation

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

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in Microsoft Message Queuing. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

2) Out-of-bounds write (CVE-ID: CVE-2023-21554)

CWE-ID: CWE-787 - Out-of-bounds write

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

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in Microsoft Message Queuing. A remote attacker can send a specially crafted malicious MSMQ packet, trigger an out-of-bounds write 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-2023-21769
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21554
• https://fortiguard.com/zeroday/FG-VD-23-002