Microsoft Security Advisory 3046015

Vulnerability in Schannel Could Allow Security Feature Bypass

Published: March 5, 2015 | Updated: March 10, 2015

Version: 2.0

Microsoft has completed the investigation into a public report of a vulnerability. We have issued Microsoft Security Bulletin MS15-031 to address this issue. For more information about this issue, including download links for an available security update, please review the security bulletin. The vulnerability addressed is the Schannel Security Feature Bypass Vulnerability - CVE-2015-1637.

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please visit the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

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The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

  • V1.0 (March 5, 2015): Advisory published.
  • V1.1 (March 5, 2015): Advisory revised to clarify the reason why no workaround exists for systems running Windows Server 2003. See the Update FAQ for more information.
  • V2.0 (March 10, 2015): Advisory updated to reflect publication of security bulletin.

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