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Summary

This security update resolves vulnerabilities in Skype for Business and Microsoft Lync Server. The most severe of these vulnerabilities could allow elevation of privilege if a user clicks a specially crafted URL. An attacker would have to convince users to click a link in an instant messenger or email message that directs them to an affected website by way of a specially crafted URL. To learn more about the vulnerability, see Microsoft Security Bulletin MS15-104.

More information about this security update

The following articles contain more information about this security update as it relates to individual product versions. The articles may contain known issue information.

More Information

Microsoft Lync Server 2013

Reference tableThe following table contains the security update information for this software.

Security update file name

For Microsoft Lync Server 2013 (3080353):
WebComponents.msp

Installation switches

See Microsoft Knowledge Base Article 197147

Restart requirement

This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

Use Add or Remove Programs item in Control Panel.

File information

See Microsoft Knowledge Base Article 3080353.

Registry key verification

For Microsoft Lync Server 2013 (WebComponents.msp):

HKLM\Software\Microsoft\Real-Time Communications\{2A65AB9C-57AD-4EC6-BD4E-BD61A7C583B3}\Version = 5.0.8308.927

Skype for Business Server 2015

Reference tableThe following table contains the security update information for this software.

Security update file name

For Skype for Business Server 2015 (3080355):
WebComponents.msp

For Skype for Business Server 2015 (3080352):
EnterpriseWebApp.msp

Installation switches

See Microsoft Knowledge Base Article 197147

Restart requirement

This update does not require a restart. The installer stops the required services, applies the update, and then restarts the services. However, if the required services cannot be stopped for any reason, or if required files are being used, this update will require a restart. If this behavior occurs, you receive a message that advises you to restart.

Removal information

See Microsoft Knowledge Base Article 3061064

File information

See Microsoft Knowledge Base Article 3080355.
See Microsoft Knowledge Base Article 3080352.

Registry key verification

For Skype for Business Server 2015 (WebComponents.msp):

HKEY_LOCAL_MACHINE\Software\Microsoft\Real-Time Communications\{2A65AB9C-57AD-4EC6-BD4E-BD61A7C583B3}\Version = 6.0.9319.72

For Skype for Business Server 2015 (EnterpriseWebApp.msp):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\F055581A89591B9409A70EFBF5EB7DE7\InstallProperties = 6.0.9319.72


Package Name

Package Hash SHA 1

Package Hash SHA 2

EnterpriseWebApp_2015_en_us_x64.msp

4E2196C6EAD919109E179361058C4EB79752FE98

1747EBE41F7E90CE60E3929AFC020E6F0117455DF9F945B9D55293F2919C5117

WebComponents_2015_en-us_x64.msp

5AE12FEA75F5031C3F85065D542379952DF83AC0

0BF98F955B10DDEF028C4ECF0DDB05CDFEB0F7A13AC6214D545684696EFA46DB

WebComponents_Lync2013_en-us_x64.msp

1067898A33AC2DCCB4843570B37159C99A0D40C5

F48003AA5C04F2418F6390D67B3E4111E93D78D2DF28342A41F9171A799EA05A

EnterpriseWebApp.msp

C9586471881CCBC3F9318654185B99F38E502C5B

3DEAB025280379CD49069A7F818DB9CFAB472BB693E15FA11256F0E00AE7F4A5

WebComponents.msp

27EFC31A1C885E1884A77FA6788715ADBB913F09

C8C7024A81FC4F039A51BEAC6660217B6D3A8E6D94D4636370C1730A62AB9EFD


Help for installing updates: Support for Microsoft Update

Security solutions for IT professionals: TechNet Security Troubleshooting and Support

Help for protecting your Windows-based computer from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support

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