CVE-2015-6112

Description

SChannel in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a "triple handshake attack," aka "Schannel TLS Triple Handshake Vulnerability."

Category

5.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 7.41% Top 10%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-121 patch vendor advisory
http://www.securitytracker.com/id/1034124 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2015-6112?
CVE-2015-6112 has been scored as a medium severity vulnerability.
How to fix CVE-2015-6112?
To fix CVE-2015-6112, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-6112 being actively exploited in the wild?
It is possible that CVE-2015-6112 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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