KB4023307: Security Update for the Windows Uniscribe Remote Code Execution Vulnerability for Microsoft Silverlight 5 (June 2017)

high Nessus Plugin ID 100767
New! Vulnerability Priority Rating (VPR)

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VPR Score: 8.9

Synopsis

A web application framework running on the remote host is affected by multiple remote code execution vulnerabilities.

Description

The version of Silverlight 5 installed on the remote Windows host is missing security update KB4023307. It is, therefore, affected by multiple vulnerabilities :

- A remote code execution vulnerability exists in Windows Uniscribe software due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a specially crafted website or to open a specially crafted document file, to execute arbitrary code in the context of the current user. (CVE-2017-0283)

- A remote code execution vulnerability exists in the Windows font library due to improper handling of embedded fonts. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a specially crafted website or open a specially crafted Microsoft document, to execute arbitrary code in the context of the current user. (CVE-2017-8527)

Solution

Apply security update KB4023307.

See Also

http://www.nessus.org/u?73572b10

http://www.nessus.org/u?36ab262f

http://www.nessus.org/u?5c2ca141

Plugin Details

Severity: High

ID: 100767

File Name: smb_nt_ms17_jun_4023307.nasl

Version: 1.10

Type: local

Agent: windows

Family: Windows

Published: 6/13/2017

Updated: 8/3/2018

Dependencies: silverlight_detect.nasl

Risk Information

Risk Factor: High

VPR Score: 8.9

CVSS v2.0

Base Score: 9.3

Temporal Score: 7.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 8.8

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:microsoft:silverlight:*:*:*:*:*:*:*:*

Required KB Items: SMB/Registry/Enumerated, SMB/Silverlight/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/13/2017

Vulnerability Publication Date: 6/13/2017

Reference Information

CVE: CVE-2017-0283, CVE-2017-8527

BID: 98920, 98933

MSKB: 4023307

MSFT: MS17-4023307

IAVA: 2017-A-0180