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

Medium Nessus Plugin ID 83360

Synopsis

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

Description

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.

Solution

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

See Also

https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2015/ms15-055

Plugin Details

Severity: Medium

ID: 83360

File Name: smb_nt_ms15-055.nasl

Version: 1.10

Type: local

Agent: windows

Published: 2015/05/12

Updated: 2018/11/15

Dependencies: 13855, 57033

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/05/12

Vulnerability Publication Date: 2015/05/12

Reference Information

CVE: CVE-2015-1716

BID: 74489

MSFT: MS15-055

MSKB: 3061518