| VID |
26708 |
| Severity |
30 |
| Port |
139,445 |
| Protocol |
TCP |
| Class |
SMB |
| Detailed Description |
The Hotfix (MS15-055, 3061518) for 'Vulnerability in Schannel Could Allow Information Disclosure' has not been applied.
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure when Secure Channel (Schannel) allows the use of a weak Diffie-Hellman ephemeral (DHE) key length of 512 bits in an encrypted TLS session. Allowing 512-bit DHE keys makes DHE key exchanges weak and vulnerable to various attacks. A server needs to support 512-bit DHE key lengths for an attack to be successful; the minimum allowable DHE key length in default configurations of Windows servers is 1024 bits.
- Schannel Information Disclosure Vulnerability(CVE-2015-1716)
An information disclosure vulnerability exists in Secure Channel (Schannel) when it allows the use of a weak Diffie-Hellman ephemeral (DHE) key length of 512 bits in an encrypted TLS session. Allowing 512-bit DHE keys makes DHE key exchanges weak and vulnerable to various attacks.
* 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/ms15-055
* 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(3061518) for your system, as listed in Microsoft Security Bulletin MS15-055at https://technet.microsoft.com/en-us/library/security/ms15-055
-- 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-2015-1716 (CVE) |
| Related URL |
74489 (SecurityFocus) |
| Related URL |
(ISS) |
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