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Microsoft Windows Telephony Service Vulnerability
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Secunia Advisory:
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SA16354
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Release Date:
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2005-08-09
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Last Update:
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2005-11-21
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Critical:
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Moderately critical
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Impact:
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Privilege escalation
System access
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| OS: | Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows 98
Microsoft Windows 98 Second Edition
Microsoft Windows Millenium
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Embedded
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
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| | CVE reference: | CVE-2005-0058 (Secunia mirror)
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Description:
A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious, local users to gain escalated privileges or by malicious people to compromise a vulnerable system.
The vulnerability is caused due to an unspecified error in the TAPI (Telephony Application Programming Interface) service when validating permissions and the length of certain messages before copying the data to an allocated buffer.
Successful exploitation allows malicious, local users to gain escalated privileges. On certain configurations of Windows 2000 Server and Windows Server 2003 with the Telephony service enabled (disabled by default), it is also possible to exploit the vulnerability without a local account. However, only authenticated users can access the service on Windows Server 2003 and hence exploit the vulnerability.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, using the Network Software Inspector.
Solution:
Apply patches.
Microsoft Windows 2000 (requires SP4):
http://www.microsoft.com/downloads/de...=C7417EA1-7AFC-4A55-95DC-E814975B8AE6
Microsoft Windows XP (requires SP1 or SP2):
http://www.microsoft.com/downloads/de...=B049004B-AF28-41D7-8AE6-7A3DB15211F1
Microsoft Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=705545D0-B53B-4E17-8B62-A4C652697C61
Microsoft Windows XP Embedded (with SP2):
http://www.microsoft.com/downloads/de...=9da5dae9-9e2d-45ef-8c9b-d773409b6187
Microsoft Windows XP Embedded (with SP1):
http://www.microsoft.com/downloads/de...=8f1f7ae2-8e47-4055-9f55-aef72d8ea60d
Microsoft Windows Server 2003:
http://www.microsoft.com/downloads/de...=0097FE14-1D6B-4423-A437-DEA1ED665A07
Microsoft Windows Server 2003 (for Itanium-based systems):
http://www.microsoft.com/downloads/de...=BC16BEAE-0BAD-490C-A80F-4BF81C360CA0
Microsoft Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=0CEF9CC2-A7BD-42E0-81B1-EDC303DA8A40
Microsoft Windows 98, Microsoft Windows 98 SE, and Microsoft Windows ME:
The vendor will not be releasing patches, as the vulnerability isn't considered critical on these versions.
Provided and/or discovered by:
The vendor credits Kostya Kortchinsky, CERT Renater.
Changelog:
2005-11-21: Added patch information for Windows XP Embedded.
Original Advisory:
MS05-40 (KB893756):
http://www.microsoft.com/technet/security/Bulletin/MS05-040.mspx
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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