SB2019100931 - Multiple vulnerabilities in Microsoft Windows

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-1316)

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

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

2) Improper Authentication (CVE-ID: CVE-2019-1320)

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to Windows improperly handles authentication requests. A local user can run a specially crafted application on the victim system, bypass authentication process and run processes in an elevated context.

3) Improper Authentication (CVE-ID: CVE-2019-1322)

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

The vulnerability exists due to Windows improperly handles authentication requests. A local user can bypass authentication process and run processes in an elevated context.

4) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-1340)

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

The vulnerability exists due to Windows AppX Deployment Server allows file creation in arbitrary locations. A local authenticated user can run a specially crafted application and take control of an affected system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1316
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1320
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1322
• https://www.exploit-db.com/exploits/47684
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1340