Secunia Research: Microsoft Windows Type 1 Font Processing Vulnerability Dec 14 2016 12:27PM
Secunia Research (remove-vuln secunia com)
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Secunia Research 2016/12/14

Microsoft Windows Type 1 Font Processing Vulnerability

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Table of Contents

Affected Software....................................................1

Severity.............................................................2

Description of Vulnerability.........................................3

Solution.............................................................4

Time Table...........................................................5

Credits..............................................................6

References...........................................................7

About Flexera Software...............................................8

Verification.........................................................9

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1) Affected Software

* Microsoft Windows 10

* Microsoft Windows 7

* Microsoft Windows 8.1

* Microsoft Windows RT 8.1

* Microsoft Windows Server 2008

* Microsoft Windows Server 2012

* Microsoft Windows Server 2016

* Microsoft Windows Vista

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2) Severity

Rating: Moderately critical

Impact: Privilege escalation, Denial of Service

Where: From remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in Microsoft Windows,

which can be exploited by malicious, local users to gain escalated

privileges and by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the win32k.sys

when processing Type 1 fonts, which can be exploited to trigger a

NULL pointer dereference and subsequently cause a kernel crash or

gain elevated privileges via a specially crafted PFB font.

The vulnerability is confirmed on a fully patched Windows 7

Professional (win32k.sys version 6.1.7601.23545).

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4) Solution

Apply update.

https://technet.microsoft.com/library/security/MS16-151

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5) Time Table

2016/12/01 - Vendor notified about vulnerability.

2016/12/06 - Vendor response.

2016/12/13 - Release of Secunia Advisory SA73777.

2016/12/14 - Public disclosure of Secunia Research Advisory.

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6) Credits

Behzad Najjarpour Jabbari, Secunia Research at Flexera Software

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7) References

The Common Vulnerabilities and Exposures (CVE) project has assigned

the CVE-2016-7259 identifier for the vulnerability.

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8) About Flexera Software

Flexera Software helps application producers and enterprises increase

application usage and the value they derive from their software.

http://www.flexerasoftware.com/enterprise/company/about/

Flexera Software delivers market-leading Software Vulnerability

Management solutions enabling enterprises to proactively identify and

remediate software vulnerabilities, effectively reducing the risk of

costly security breaches.

http://www.flexerasoftware.com/enterprise/products/

Flexera Software supports and contributes to the community in

several ways. We have always believed that reliable vulnerability

intelligence and tools to aid identifying and fixing vulnerabilities

should be freely available for consumers to ensure that users,

who care about their online privacy and security, can stay secure.

Only a few vendors address vulnerabilities in a proper way and help

users get updated and stay secure. End-users (whether private

individuals or businesses) are otherwise left largely alone, and

that is why back in 2002, Secunia Research started investigating,

coordinating disclosure and verifying software vulnerabilities.

In 2016, Secunia Research became a part of Flexera Software

and today our in-house software vulnerability research remains the

core of the Software Vulnerability Management products at

Flexera Software.

http://secunia.com/secunia_research/

The public Advisory database contains sufficient information for

researchers, security enthusiasts, and consumers to lookup individual

products and vulnerabilities and assess, whether they need to take

any actions to secure their systems or whether a given vulnerability

has already been discovered

http://secunia.com/advisories/

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9) Verification

Please verify this advisory by visiting the Secunia website:

http://secunia.com/secunia_research/2016-19/

Complete list of vulnerability reports published by Secunia Research:

http://secunia.com/secunia_research/

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