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
- CVE-2017-0147
- MSKB-4012598
- MSKB-4012606
- MSKB-4013198
- MSKB-4013429
- MSKB-4012213
- MSKB-4012214
- MSKB-4012212
- MS-MS17-010
- URL: https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks
- URL: https://blogs.technet.microsoft.com/mmpc/2017/05/12/wannacrypt-ransomware-worm-targets-out-of-date-systems
- URL: https://community.rapid7.com/community/infosec/blog/2017/05/12/wanna-decryptor-wncry-ransomware-explained