KB4015195: Security Update for the Win32k Information Disclosure Vulnerability (April 2017)

high Nessus Plugin ID 99307
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Windows host is affected by an information disclosure vulnerability.

Description

The remote Windows host is missing a security update KB4015195. It is, therefore, affected by multiple vulnerabilities:

- An information disclosure vulnerability in the win32k component due to improper handling of kernel information. A local attacker can exploit this, via a specially crafted application,to disclose sensitive information. (CVE-2017-0058)

- An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. (CVE-2017-0155)

Solution

Apply security update KB4015195.

See Also

http://www.nessus.org/u?d1b7940e

http://www.nessus.org/u?ce1d6587

Plugin Details

Severity: High

ID: 99307

File Name: smb_nt_ms17_apr_4015195.nasl

Version: 1.14

Type: local

Agent: windows

Published: 4/12/2017

Updated: 11/15/2018

Dependencies: smb_hotfixes.nasl, ms_bulletin_checks_possible.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/11/2017

Vulnerability Publication Date: 4/11/2017

Reference Information

CVE: CVE-2017-0058, CVE-2017-0155

BID: 97462, 97471

MSKB: 4015195

MSFT: MS17-4015195