SB2023031468 - Multiple vulnerabilities in Microsoft Client Server Run-Time Subsystem (CSRSS)

Description

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2023-23409)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Client Server Run-Time Subsystem (CSRSS). A local user can gain unauthorized access to sensitive information on the system.

2) Information disclosure (CVE-ID: CVE-2023-23394)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in Client Server Run-Time Subsystem (CSRSS). A local user can gain unauthorized access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23409
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23394