MS KB3046015: Vulnerability in Schannel Could Allow Security Feature Bypass (FREAK)

medium Nessus Plugin ID 81652
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Synopsis

This plugin has been deprecated.

Description

The remote Windows host is affected by a security feature bypass vulnerability, known as FREAK (Factoring attack on RSA-EXPORT Keys), due to the support of weak EXPORT_RSA cipher suites with keys less than or equal to 512 bits. A man-in-the-middle attacker may be able to downgrade the SSL/TLS connection to use EXPORT_RSA cipher suites which can be factored in a short amount of time, allowing the attacker to intercept and decrypt the traffic.

Solution

Apply the recommended workarounds specified by Microsoft.

See Also

https://technet.microsoft.com/en-us/library/security/3046015

https://www.smacktls.com/#freak

Plugin Details

Severity: Medium

ID: 81652

File Name: smb_kb3046015.nasl

Version: Revision: 1.7

Type: local

Agent: windows

Family: Windows

Published: 3/5/2015

Updated: 8/30/2017

Dependencies: smb_hotfixes.nasl

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 5

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

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/Registry/Enumerated, SMB/WindowsVersion

Vulnerability Publication Date: 1/8/2015

Reference Information

CVE: CVE-2015-1637

BID: 72965

OSVDB: 119106

MSKB: 3046015