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AUSCERT External Security Bulletin Redistribution
ESB-2015.2352
Microsoft Security Bulletin MS15-102- Important - Vulnerabilities in
Windows Task Management Could Allow Elevation of Privilege
9 September 2015
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AusCERT Security Bulletin Summary
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Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-2528 CVE-2015-2525 CVE-2015-2524
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS15-102
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Microsoft Security Bulletin MS15-102: Vulnerabilities in Windows Task
Management Could Allow Elevation of Privilege (3089657) - Important
Bulletin Number: MS15-102
Bulletin Title: Vulnerabilities in Windows Task Management Could Allow
Elevation of Privilege
Severity: Important
KB Article: 3089657
Version: 1.0
Published Date: September 8, 2015
Executive Summary
This security update resolves vulnerabilities in Microsoft Windows. The
vulnerabilities could allow elevation of privilege if an attacker logs on to a
system and runs a specially crafted application.
This security update is rated Important for all supported releases of
Microsoft Windows. For more information, see the Affected Software section.
Affected Software
Windows Vista
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Windows 8 for 32-bit Systems
Windows 8 for x64-based Systems
Windows 8.1 for 32-bit Systems
Windows 8.1 for x64-based Systems
Windows Server 2012
Windows Server 2012 R2
Windows RT[1]
Windows RT 8.1[1]
Windows 10 for 32-bit Systems[2]
Windows 10 for x64-based Systems[2]
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core
installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core
installation)
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2 (Server Core installation)
[1]The security updates for Windows RT operating systems are available via
Windows Update only.
[2]The Windows 10 update is cumulative. In addition to containing non-security
updates, it also contains all of the security fixes for all of the Windows
10-affected vulnerabilities shipping with this months security release. See
Microsoft Knowledge Base Article 3081455 for more information and download
links.
Vulnerability Information
Windows Task Management Elevation of Privilege Vulnerability - CVE-2015-2524
An elevation of privilege vulnerability exists when Microsoft Windows fails to
properly validate and enforce impersonation levels. An attacker who
successfully exploited this vulnerability could bypass impersonation-level
security checks and gain elevated privileges on a targeted system.
To exploit the vulnerability, an attacker would first have to log on to the
system. An attacker could then run a specially crafted application designed to
increase privileges. The security update addresses the vulnerability by
correcting how Windows validates impersonation events.
Microsoft received information about this vulnerability through coordinated
vulnerability disclosure. When this security bulletin was originally issued,
Microsoft had not received any information to indicate that this vulnerability
had been publicly used to attack customers.
Windows Task File Deletion Elevation of Privilege Vulnerability -
CVE-2015-2525
An elevation of privilege vulnerability exists in Windows Task Scheduler when
it improperly verifies certain file system interactions. An attacker who
successfully exploited this vulnerability could run arbitrary code in the
security context of the local system. An attacker could then install programs;
view, change, or delete data; or create new accounts with full user rights.
To exploit this vulnerability, an attacker would first have to log on to the
system. An attacker could then run a specially crafted application that could
exploit the vulnerability and take complete control over an affected system.
The security update addresses the vulnerability by correcting how Task
Scheduler verifies file system interactions.
Microsoft received information about this vulnerability through coordinated
vulnerability disclosure. When this security bulletin was originally issued,
Microsoft had not received any information to indicate that this vulnerability
had been publicly used to attack customers.
Windows Task Management Elevation of Privilege Vulnerability - CVE-2015-2528
An elevation of privilege vulnerability exists when Microsoft Windows fails to
properly validate and enforce impersonation levels. An attacker who
successfully exploited this vulnerability could bypass impersonation-level
security checks and gain elevated privileges on a targeted system.
To exploit the vulnerability, an attacker would first have to log on to the
system. An attacker could then run a specially crafted application designed to
increase privileges. The security update addresses the vulnerability by
correcting how Windows validates impersonation events.
Microsoft received information about this vulnerability through coordinated
vulnerability disclosure. When this security bulletin was originally issued,
Microsoft had not received any information to indicate that this vulnerability
had been publicly used to attack customers.
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