| VID |
26699 |
| Severity |
30 |
| Port |
139,445 |
| Protocol |
TCP |
| Class |
SMB |
| Detailed Description |
The Hotfix (MS15-031, 3046049) for 'Vulnerability in Schannel Could Allow Security Feature Bypass' has not been applied.
This security update resolves a vulnerability in Microsoft Windows that facilitates exploitation of the publicly disclosed FREAK technique, an industry-wide issue that is not specific to Windows operating systems. The vulnerability could allow a man-in-the-middle (MiTM) attacker to force the downgrading of the key length of an RSA key to EXPORT-grade length in a TLS connection. Any Windows system using Schannel to connect to a remote TLS server with an insecure cipher suite is affected.
- Schannel Security Feature Bypass Vulnerability (CVE-2015-1637)
A security feature bypass vulnerability exists in Secure Channel (Schannel) that is caused by an issue in the TLS state machine whereby a client system accepts an RSA key with a shorter key length than the originally negotiated key length. The vulnerability facilitates exploitation of the publicly disclosed FREAK technique, which is an industry-wide issue that is not specific to Windows operating systems.
* Note: This check requires an account with administrative privileges which can log into the host to scan. Absence of this condition will result in the check not being performed and a False Negative for all vulnerable hosts.
* References:
https://technet.microsoft.com/en-us/library/security/ms15-031
* Platforms Affected:
Windows Server 2003 SP2
Windows Server 2003 x64 SP2
Windows Server 2003 SP2 for Itanium
Windows Vista SP2
Windows Vista x64 SP2
Windows Server 2008 SP2
Windows Server 2008 x64 SP2
Windows 7 SP1
Windows 7 x64 SP1
Windows Server 2008 R2 SP1
Windows Server 2008 R2 x64 SP1
Windows 8
Windows 8.1
Windows Server 2012
Windows Server 2012 R2 |
| Recommendation |
Apply the appropriate patch(3046049) for your system, as listed in Microsoft Security Bulletin MS15-031 at https://technet.microsoft.com/en-us/library/security/ms15-031
-- OR --
Patches for Windows platforms are also available from the Microsoft Windows Update Web site, http://windowsupdate.microsoft.com. Windows Update detects what version of Windows you are running and offers the appropriate patch. |
| Related URL |
CVE-2015-1637 (CVE) |
| Related URL |
72965 (SecurityFocus) |
| Related URL |
(ISS) |
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