CERT-In Vulnerability Note
CIVN-2015-0283
Microsoft Windows Schannel TLS Triple Handshake Vulnerability
Original Issue Date:November 12, 2015
Severity Rating: MEDIUM
Software Affected
- Windows 7 for 32-bit and x64-based Systems SP1
- Windows 8 and 8.1 for 32-bit and x64-based Systems
- Windows RT and Windows RT 8.1
- Windows Vista and Vista x64 Edition SP2
- Windows Server 2008 for 32-bit and x64-based Systems SP2
- Windows Server 2008 for Itanium-based Systems SP2
- Windows Server 2008 R2 for Itanium-based and x64-based Systems SP1
- Windows Server 2012 and Windows Server 2012 R2
- Windows Server 2008 for 32-bit and x64-based Systems SP2 (Server Core installation)
- Windows Server 2008 R2 for x64-based Systems SP1 (Server Core installation)
- Windows Server 2012 (Server Core installation)
- Windows Server 2012 R2 (Server Core installation)
Overview
A vulnerability has been reported in Microsoft Windows which could be exploited by an unauthenticated, remote attacker to conduct spoofing attacks.
Description
A spoofing vulnerability exists in Microsoft Windows due to weakness in all supported versions of the Transport Layer Security (TLS) protocol that are used by the affected software. A remote attacker could exploit this vulnerability by performing man-in-the-middle (MiTM) attack between targeted client and server.
Successful exploitation of this vulnerability could allow the attacker to impersonate the user and access sensitive information and conduct further attacks.
Solution
Apply appropriate patch as mentioned in Microsoft Security Bulletin
MS15-121
Vendor Information
Microsoft
https://technet.microsoft.com/library/security/MS15-121
References
Microsoft
https://technet.microsoft.com/library/security/MS15-121
Security Tracker
http://securitytracker.com/id/1034124
Cisco
http://tools.cisco.com/security/center/viewAlert.x?alertId=41868
CVE Name
CVE-2015-6112
Disclaimer
The information provided herein is on "as is" basis, without warranty of any kind.
Contact Information
Email: info@cert-in.org.in Phone: +91-11-24368572
Postal address
Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India
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