SB2020090862 - Multiple vulnerabilities in Microsoft Projected Filesystem

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2020-16879)

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

The vulnerability exists due to a boundary condition when a Windows Projected Filesystem improperly handles file redirections. A local user can run a specially crafted application, trigger out-of-bounds read error and read contents of memory on the system.

2) Buffer overflow (CVE-ID: CVE-2020-0805)

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to a boundary error when a Windows Projected Filesystem improperly handles file redirections. A local user can run a specially crafted application, trigger memory corruption and delete a targeted file they would not have permissions to.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16879
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0805