Blogs & Stories

SpiderLabs Blog

Attracting more than a half-million annual readers, this is the security community's go-to destination for technical breakdowns of the latest threats, critical vulnerability disclosures and cutting-edge research.

Microsoft Patch Tuesday, June 2017

For the June 2017 Patch Tuesday Microsoft is releasing 97 CVEs, nearly double the number of vulnerabilities patched in May. The release includes patches for 19 CVEs rated "Critical", 76 rated "Important" and one vulnerability each rated "Moderate" and "Low". The release also includes two roll up packages of multiple patches. The seemingly ever present one for Adobe Flash and one "defense-in-depth" update for Microsoft SharePoint. Across them all these vulnerabilities there are security updates for the following software and services:

  • Microsoft Edge Browser
  • Microsoft Windows
  • Microsoft Office
  • Microsoft Scripting Engine
  • Windows OLE
  • Microsoft GDI and Uniscribe engines
  • Adobe Flash Player
  • Microsoft SharePoint
  • Windows Search
  • Internet Explorer

Seven of the vulnerabilities rated "Critical" affect the Microsoft Scripting Engine typically used to process javascript and VBScript while web browsing. There are also a lot of the other usual suspects in the "Critical" list like the Windows PDF engine and remote code execution (RCE) vulnerabilities that can be triggered with malicious fonts in the Uniscribe and GDI engines. Relatively new to the list are RCE vulnerabilities in OLE (CVE-2017-8487), LNK shortcuts (CVE-2017-8464) and the Windows Search function (CVE-2017-8543). The Windows Search vulnerability doesn't require any authenticated access or social engineering attacks in order to trick a logged in user to exploit themselves. An attacker would only need an SMB connection to a target machine in order to run arbitrary code in the SYSTEM user context.

Vulnerabilities covered by the "Important" rating include multiple RCE vulnerabilities in Microsoft Office, so make sure you are updated before opening that Office document you received as an email attachment. There are also dozens of privilege escalation vulnerabilities patched in the "Important" list. While typically not directly a threat to a system exploits for these types of vulnerabilities are often paired with code execution vulnerabilities to gain code at the administrative or system levels.


Critical CVEs

June Flash Security Update
Remote Code Execution

LNK Remote Code Execution Vulnerability
Remote Code Execution

Microsoft Edge Memory Corruption Vulnerability
CVE-2017-8496, CVE-2017-8497
Remote Code Execution

Scripting Engine Memory Corruption Vulnerability
CVE-2017-8499, CVE-2017-8517, CVE-2017-8520, CVE-2017-8522, CVE-2017-8524, CVE-2017-8548
Remote Code Execution

Scripting Engine Remote Code Execution Vulnerability
Remote Code Execution

Windows Graphics Remote Code Execution Vulnerability
Remote Code Execution

Windows olecnv32.dll Remote Code Execution Vulnerability
Remote Code Execution

Windows PDF Remote Code Execution Vulnerability
CVE-2017-0291, CVE-2017-0292
Remote Code Execution

Windows Remote Code Execution Vulnerability
Remote Code Execution

Windows RPC Remote Code Execution Vulnerability
Remote Code Execution

Windows Search Remote Code Execution Vulnerability
Remote Code Execution

Windows Uniscribe Remote Code Execution Vulnerability
CVE-2017-0283, CVE-2017-8528
Remote Code Execution


Important CVEs

Defense-in-depth Update for Microsoft SharePoint

Device Guard Code Integrity Policy Security Feature Bypass Vulnerability
CVE-2017-0173, CVE-2017-0215, CVE-2017-0216, CVE-2017-0218, CVE-2017-0219
Security Feature Bypass

GDI Information Disclosure Vulnerability
Information Disclosure

Hypervisor Code Integrity Elevation of Privilege Vulnerability
Elevation of Privilege

Internet Explorer Memory Corruption Vulnerability
CVE-2017-8519, CVE-2017-8547
Remote Code Execution and Information Disclosure

Microsoft Browser Information Disclosure Vulnerability
Information Disclosure

Microsoft Edge Memory Corruption Vulnerability
Security Feature Bypass

Microsoft Edge Security Feature Bypass Vulnerability
CVE-2017-8530, CVE-2017-8555
Security Feature Bypass

Microsoft Office Memory Corruption Vulnerability
Remote Code Execution

Microsoft Office Remote Code Execution
CVE-2017-0260, CVE-2017-8506, CVE-2017-8509, CVE-2017-8510, CVE-2017-8511, CVE-2017-8512
Remote Code Execution

Microsoft Office Security Feature Bypass Vulnerability
Security Feature Bypass

Microsoft Outlook for Mac Spoofing Vulnerability

Microsoft PowerPoint Remote Code Execution Vulnerability
Remote Code Execution

Microsoft SharePoint Reflective XSS Vulnerability
Information Disclosure

Scripting Engine Memory Corruption Vulnerability
Remote Code Execution

SharePoint XSS vulnerability
Elevation of Privilege

Skype for Business Information Disclosure Vulnerability
Information Disclosure

Win32k Elevation of Privilege Vulnerability
CVE-2017-8465, CVE-2017-8468
Elevation of Privilege

Win32k Information Disclosure Vulnerability
CVE-2017-8470, CVE-2017-8471, CVE-2017-8472, CVE-2017-8473, CVE-2017-8475, CVE-2017-8477, CVE-2017-8484, CVE-2017-8554
Information Disclosure

Windows COM Session Elevation of Privilege Vulnerability
Elevation of Privilege

Windows Cursor Elevation of Privilege Vulnerability
Elevation of Privilege

Windows Default Folder Tampering Vulnerability

Windows Elevation of Privilege Vulnerability
Elevation of Privilege

Windows Graphics Information Disclosure Vulnerability
CVE-2017-0286, CVE-2017-0287, CVE-2017-0288, CVE-2017-0289, CVE-2017-8531, CVE-2017-8532, CVE-2017-8533
Information Disclosure

Windows Kernel Elevation of Privilege Vulnerability
Elevation of Privilege

Windows Kernel Information Disclosure Vulnerability
CVE-2017-0299, CVE-2017-0300, CVE-2017-8462, CVE-2017-8469, CVE-2017-8474, CVE-2017-8476, CVE-2017-8478, CVE-2017-8479, CVE-2017-8480, CVE-2017-8481, CVE-2017-8482, CVE-2017-8483, CVE-2017-8485, CVE-2017-8488, CVE-2017-8489, CVE-2017-8490, CVE-2017-8491, CVE-2017-8492
Information Disclosure

Windows PDF Information Disclosure Vulnerability
Information Disclosure

Windows Search Information Disclosure Vulnerability
Information Disclosure

Windows Security Feature Bypass Vulnerability
Security Feature Bypass

Windows TDX Elevation of Privilege Vulnerability
Elevation of Privilege

Windows Uniscribe Information Disclosure Vulnerability
CVE-2017-0282, CVE-2017-0284, CVE-2017-0285, CVE-2017-8534
Information Disclosure

Windows VAD Cloning Denial of Service Vulnerability
Denial of Service


Moderate CVEs

Microsoft Edge Information Disclosure Vulnerability
Information Disclosure


Low CVEs

Microsoft Edge Information Disclosure Vulnerability
Information Disclosure

Related SpiderLabs Blogs