SB2023021502 - Multiple DoS vulnerabilities in Microsoft Windows Secure Channel

Description

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2023-21813)

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:U/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 Windows Secure Channel implementation. A remote attacker can pass specially crafted input to the system and perform a denial of service (DoS) attack.

2) Input validation error (CVE-ID: CVE-2023-21818)

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:U/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 Windows Secure Channel implementation. A remote attacker can pass specially crafted input to the system and perform a denial of service (DoS) attack.

3) Input validation error (CVE-ID: CVE-2023-21819)

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:U/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 Windows Secure Channel implementation. A remote attacker can pass specially crafted input to the system and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21813
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21818
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21819