SB2020090872 - Information disclosure in Microsoft splwow64

Description

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-0790)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

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

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists in the way splwow64.exe handles certain calls. A local user can leverage behavior of splwow64.exe to escalate privileges on the system.

2) Input validation error (CVE-ID: CVE-2020-0875)

CWE-ID: CWE-20 - Improper input validation

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

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

The vulnerability exists in the way splwow64.exe handles certain calls. A local user can leverage behavior of splwow64.exe to gain access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0790
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0875