SB2019071016 - Privilege escalation in Windows Audio Service

Description

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2019-1086)

CWE-ID: CWE-20 - Improper input validation

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 escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input in Windows Audio Service.

A local user can create a specially crafted application and use this vulnerability in conjunction with another issue to escalate privileges on the system.

2) Input validation error (CVE-ID: CVE-2019-1087)

CWE-ID: CWE-20 - Improper input validation

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 escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input in Windows Audio Service.

A local user can create a specially crafted application and use this vulnerability in conjunction with another issue to escalate privileges on the system.

3) Input validation error (CVE-ID: CVE-2019-1088)

CWE-ID: CWE-20 - Improper input validation

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 escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input in Windows Audio Service.

A local user can create a specially crafted application and use this vulnerability in conjunction with another issue to escalate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1086
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1087
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1088