CVE-2015-1637

MEDIUM 4.3CVE-2015-1637 · Published 06/03/2015 · updated 17/06/2026

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, 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 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204 and CVE-2015-1067.

References

web.archive.org/web/20150321220028/https://freakattack.com
securityfocus.com/bid/72965 · Third Party Advisory
securitytracker.com/id/1031833 · Third Party Advisory
docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-031 · Patch
freakattack.com · Vendor Advisory
technet.microsoft.com/library/security/3046015 · Patch

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