Privilege escalation in Microsoft Windows and Windows Server - CVE-2017-0298

Vulnerability identifier: #VU7039

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2017-0298

CWE-ID: CWE-287

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The weakness exists due to improper authentication by DCOM object in Helppane.exe. A local attacker can run a specially crafted application after another user logged on to the same system via Terminal Services or Fast User Switching and execute arbitrary code with system privileges.

Successful exploitation of the vulnerability results in full system compromise.

Microsoft Windows
Windows Server

Install update from vendor's website.

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0298

• Multiple vulnerabilities in Microsoft Windows
• Windows COM Session Elevation of Privilege Vulnerability