MS15-055: Vulnerability in Schannel Could Allow Information Disclosure (3061518)

Medium Nessus Plugin ID 83360


The remote Windows host is affected by an information disclosure vulnerability.


The remote Windows host is affected by an information disclosure vulnerability due to Secure Channel (Schannel) allowing the use of a weak Diffie-Hellman ephemeral (DFE) key length of 512 bits in an encrypted TLS session. Usage of weak keys can result in vulnerable key exchanges that are susceptible to various attacks.


Microsoft has released a set of patches for Windows 2003, Vista, 2008, 7, 2008 R2, 8, 2012, 8.1, and 2012 R2.

See Also

Plugin Details

Severity: Medium

ID: 83360

File Name: smb_nt_ms15-055.nasl

Version: $Revision: 1.8 $

Type: local

Agent: windows

Published: 2015/05/12

Modified: 2017/07/24

Dependencies: 13855, 57033

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2015/05/12

Vulnerability Publication Date: 2015/05/12

Reference Information

CVE: CVE-2015-1716

BID: 74489

OSVDB: 122019

MSFT: MS15-055

MSKB: 3061518