PT-2016-2917 · Microsoft · Windows Server 2008 R2 Sp1+7

Published 2016-11-08 · Updated 2018-10-12 · CVE-2016-7246

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Microsoft Windows Server 2008 R2 SP1 Microsoft Windows 7 SP1 Microsoft Windows 8.1 Microsoft Windows Server 2012 Gold and R2 Microsoft Windows RT 8.1 Microsoft Windows 10 versions Gold through 1607 Microsoft Windows Server 2016

Description The issue is related to a kernel-mode driver in Microsoft Windows, which is associated with insufficient access restrictions. This allows a local attacker to gain elevated privileges using a specially crafted application. The vulnerability can be exploited to corrupt kernel state information, leading to privilege escalation.

Recommendations For Microsoft Windows Server 2008 R2 SP1, update to a newer version to mitigate the risk. For Microsoft Windows 7 SP1, update to a newer version to mitigate the risk. For Microsoft Windows 8.1, update to a newer version to mitigate the risk. For Microsoft Windows Server 2012 Gold and R2, update to a newer version to mitigate the risk. For Microsoft Windows RT 8.1, update to a newer version to mitigate the risk. For Microsoft Windows 10 versions Gold through 1607, update to a version newer than 1607 to mitigate the risk. For Microsoft Windows Server 2016, update to a newer version to mitigate the risk. As a temporary workaround, consider restricting access to the NtUserMagSetContextInformation function until a patch is available.

Fix

LPE

Weakness Enumeration

CWE-264

Related Identifiers

BDU:2016-02348

CVE-2016-7246

ZDI-16-594

Affected Products

Windows

Windows 10

Windows 7 Sp1

Windows 8.1

Windows Rt 8.1

Windows Server 2008 R2 Sp1

Windows Server 2012

Windows Server 2016

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2016-7246 · Security Note
• https://bdu.fstec.ru/vul/2016-02348 · Security Note
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-135 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-7246 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7246 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-16-594 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2016-7246 · Vendor Advisory
• http://technet.microsoft.com/security/bulletin/MS16-135 · Note
• http://securitytracker.com/id/1037251 · Note
• http://securityfocus.com/bid/94063 · Note
• http://zerodayinitiative.com/advisories/ZDI-16-594 · Note