SB2018061229 - Privilege escalation in Microsoft Windows Desktop Bridge

Description

This security bulletin contains information about 2 vulnerabilities.

1) Privilege escalation (CVE-ID: CVE-2018-8208)

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

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

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper management of the virtual registry by the Windows Desktop Bridge. A local attacker can run a specially crafted application and run arbitrary code in kernel mode.

2) Privilege escalation (CVE-ID: CVE-2018-8214)

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

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

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper management of the virtual registry by the Windows Desktop Bridge. A local attacker can run a specially crafted application and run arbitrary code in kernel mode.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8208
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8214