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Microsoft CVE-2019-1166: Windows NTLM Tampering Vulnerability

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Microsoft CVE-2019-1166: Windows NTLM Tampering Vulnerability

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
10/08/2019
Created
10/09/2019
Added
10/08/2019
Modified
11/10/2020

Description

A tampering vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLM MIC (Message Integrity Check) protection. An attacker who successfully exploited this vulnerability could gain the ability to downgrade NTLM security features. To exploit this vulnerability, the attacker would need to tamper with the NTLM exchange. The attacker could then modify flags of the NTLM packet without invalidating the signature. The update addresses the vulnerability by hardening NTLM MIC protection on the server-side.

Solution(s)

  • msft-kb4517389-5c400e97-567b-460d-bdbd-b8f6ad298c9c
  • msft-kb4517389-b772c442-f33b-42f3-b4fd-6780110d6a53
  • msft-kb4517389-c417813c-d3db-4b44-83f8-60de59e73b91
  • msft-kb4519338-212c3c1b-d31d-4e80-a30f-ad2cddf5c7fc
  • msft-kb4519338-4dc3fc62-f0c5-47fd-b788-24c7bb43bd60
  • msft-kb4519338-effa0a42-b050-47d4-a23a-1f3f0a7a7195
  • msft-kb4519985-8448c774-0e98-4182-ab79-963ba49e33b4
  • msft-kb4519985-8a3aec2b-e0d7-44a2-938d-c02f6b274548
  • msft-kb4519985-f0d0e25e-cdb1-4823-b241-92ac2a81d3b3
  • msft-kb4519990-a2d349fe-ee2a-4a85-be00-ee8cba079e9b
  • msft-kb4519990-b8b37d2d-5063-477b-809c-baf8ce11b723
  • msft-kb4519990-e54b6ac3-a904-4687-b53b-6db63a034c57
  • msft-kb4519998-0c7eb702-e48b-48da-8ef8-e984aa6cb0b8
  • msft-kb4519998-3e345f2b-0454-4475-968e-a723d555f2fb
  • msft-kb4519998-a3faed21-d1ee-4af7-bc23-42e4de28e30c
  • msft-kb4520003-0d1c5f85-509f-4142-baa9-c9a7d22386f8
  • msft-kb4520003-4177c40d-e502-4e6c-9b95-6162fba1cec3
  • msft-kb4520003-a99aef55-9e6d-4c41-8f5b-d84b383a4f3a
  • msft-kb4520003-ba350f9c-c29f-4b6c-b51b-e3b7b3173be3
  • msft-kb4520003-eb2b689a-dab5-479f-a051-dd4ee86b98ef
  • msft-kb4520003-f6315128-ecc0-4bc5-a152-c9383a644a56
  • msft-kb4520004-173a42f8-0561-4a76-9a70-bd9cb6fa9151
  • msft-kb4520004-f72dbbef-cedb-450e-927d-05414a78aded
  • msft-kb4520008-60000a2c-bbc0-473e-a45f-db8e5d59d8f6
  • msft-kb4520008-d876d728-1f3a-4686-ac8d-9fee971d40af
  • msft-kb4520008-ff9d5ac1-9660-4a2c-8669-260891a47e33
  • msft-kb4520009-6f2b0614-8c8a-474c-b9d5-9f1ab035f1fb
  • msft-kb4520009-7c787b1f-05ba-4516-a24c-617da56d1405
  • msft-kb4520009-e97e00d7-47d2-4016-a5c1-bbe896a46d6f
  • msft-kb4520010-50f87af3-267d-4242-9ca8-ad63233c710d
  • msft-kb4520010-fe65a4a7-b1ab-44b2-9c92-16daa2ddd839
  • msft-kb4520011-13958a0a-73dc-4296-b375-8ac1cd632f1b
  • msft-kb4520011-c32b63ca-7b05-458e-aaa4-84400e2e6f1c

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