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Microsoft CVE-2017-0147: Windows SMB Information Disclosure Vulnerability

Severity CVSS Published Added Modified
4 (AV:N/AC:M/Au:N/C:P/I:N/A:N) March 13, 2017 March 13, 2017 May 14, 2017

Available Exploits 

Description

An information disclosure vulnerability exists in the way that the Microsoft Server Message Block 1.0 (SMBv1) server handles certain requests. An attacker who successfully exploited this vulnerability could craft a special packet, which could lead to information disclosure from the server. To exploit the vulnerability, in most situations, an unauthenticated attacker could send a specially crafted packet to a targeted SMBv1 server.The security update addresses the vulnerability by correcting how SMBv1 handles these specially crafted requests.

This has been exploited as part of the WannaCry (a.k.a. WannaCrypt, WannaCryptor, Wcry) Ransomware Attacks.

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References

Solution

msft-kb4012212-13c36c25-fee4-429f-933e-f93ebfbb91f5