Vulnerability Note VU#505120
Microsoft Secure Channel (Schannel) vulnerable to remote code execution via specially crafted packets
A critical vulnerability in Microsoft Windows systems could allow a remote attacker to execute arbitrary code via specially crafted network packets.
Microsoft Secure Channel (Schannel) is a security package that provides SSL and TLS on Microsoft Windows platforms. Due to a flaw in Schannel (CVE-2014-6321), a remote attacker could execute arbitrary code on both client and server applications.
It may be possible for exploitation to occur without authentication and via unsolicited network traffic. According to Microsoft MS14-066, there are no known mitigations or workarounds.
Microsoft patches are typically reverse-engineered and exploits developed in a matter of days or weeks. An anonymous Pastebin user has threatened to publish an exploit on Friday, November 14, 2014. Immunity Inc. has developed a proof of concept exploit for their CANVAS tool.
ANEXIA has published a tool to test if a system is vulnerable.
This flaw allows a remote attacker to execute arbitrary code and fully compromise vulnerable systems.
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Vendor Information (Learn More)
Many versions of Microsoft Windows operating systems are confirmed vulnerable, including:
|Vendor||Status||Date Notified||Date Updated|
|Microsoft Corporation||Affected||-||13 Nov 2014|
CVSS Metrics (Learn More)
This document was written by Joel Land.
- CVE IDs: CVE-2014-6321
- US-CERT Alert: TA14-318A
- Date Public: 11 Nov 2014
- Date First Published: 13 Nov 2014
- Date Last Updated: 17 Nov 2014
- Document Revision: 26
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