SB2019100923 - Multiple vulnerabilities in Microsoft Windows Update Client

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-1323)

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

The vulnerability exists due to Windows Update Client does not properly handle privileges. A local authenticated user can run a specially crafted application and run processes in an elevated context.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-1336)

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

The vulnerability exists due to Windows Update Client does not properly handle privileges. A local authenticated user can run a specially crafted application and run processes in an elevated context.

3) Out-of-bounds read (CVE-ID: CVE-2019-1337)

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

The vulnerability exists due to Windows Update Client fails to properly handle objects in memory. A local authenticated user can use a specially crafted application to trigger out-of-bounds read error and read contents of an elevated process.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1323
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1336
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1337