CVE-2019-1040 (GCVE-0-2019-1040)

Vulnerability from cvelistv5 – Published: 2019-06-12 13:49 – Updated: 2025-05-20 17:50
VLAI?
Summary
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.
CWE
  • Tampering
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1703 Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows 10 Version 1803 Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows Server, version 1803 (Server Core Installation) Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < publication (custom)
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    Microsoft Windows 10 Version 1809 Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < publication (custom)
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    Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < publication (custom)
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    Microsoft Windows 10 Version 1709 for 32-bit Systems Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows 10 Version 1709 Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows 10 Version 1903 for 32-bit Systems Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows 10 Version 1903 for x64-based Systems Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows 10 Version 1903 for ARM64-based Systems Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows Server, version 1903 (Server Core installation) Affected: 10.0.0 , < publication (custom)
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    Microsoft Windows 10 Version 1507 Affected: 10.0.10240.0 , < publication (custom)
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    Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < publication (custom)
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    Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < publication (custom)
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    Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < publication (custom)
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    Microsoft Windows 7 Affected: 6.1.0 , < publication (custom)
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    Microsoft Windows 7 Service Pack 1 Affected: 6.1.0 , < publication (custom)
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    Microsoft Windows 8.1 Affected: 6.3.0 , < publication (custom)
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    Microsoft Windows Server 2008 Service Pack 2 Affected: 6.0.6003.0 , < publication (custom)
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    Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) Affected: 6.0.6003.0 , < publication (custom)
Create a notification for this product.
    Microsoft Windows Server 2008 Service Pack 2 Affected: 6.0.0 , < publication (custom)
Create a notification for this product.
    Microsoft Windows Server 2008 Service Pack 2 Affected: 6.0.6003.0 , < publication (custom)
Create a notification for this product.
    Microsoft Windows Server 2008 R2 Systems Service Pack 1 Affected: 6.1.0 , < publication (custom)
Create a notification for this product.
    Microsoft Windows Server 2008 R2 Service Pack 1 Affected: 6.1.7601.0 , < publication (custom)
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    Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) Affected: 6.1.7601.0 , < publication (custom)
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    Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < publication (custom)
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    Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < publication (custom)
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    Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < publication (custom)
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    Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < publication (custom)
Create a notification for this product.
Show details on NVD website

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          "value": "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.\nTo 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.\nThe update addresses the vulnerability by hardening NTLM MIC protection on the server-side."
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Tampering",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
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      ],
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        "dateUpdated": "2025-05-20T17:50:16.225Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
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        {
          "name": "Windows NTLM Tampering Vulnerability",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1040"
        }
      ],
      "title": "Windows NTLM Tampering Vulnerability"
    }
  },
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    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
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    "datePublished": "2019-06-12T13:49:40",
    "dateReserved": "2018-11-26T00:00:00",
    "dateUpdated": "2025-05-20T17:50:16.225Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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      "id": "CVE-2019-1040",
      "lastModified": "2024-11-21T04:35:54.023",
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      "published": "2019-06-12T14:29:03.713",
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      "sourceIdentifier": "secure@microsoft.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2019-1040\",\"sourceIdentifier\":\"secure@microsoft.com\",\"published\":\"2019-06-12T14:29:03.713\",\"lastModified\":\"2025-05-20T18:15:39.637\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\\nTo exploit this vulnerability, the attacker would need to tamper with the NTLM exchange. 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VE-2019-1040\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}"
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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