CVE-2019-1019

A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages. To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges. The issue has been addressed by changing how NTLM validates network authentication messages.

CVSS v3 8.5 HIGH
CVSS v2.0 6.0 MEDIUM

8.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

6.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:S/C:P/I:P/A:P

Exploitability : 6.8 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1019
http://packetstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.html	Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1019	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:microsoft:windows_10:-:::::::*
	cpe:2.3:o:microsoft:windows_10:1607:::::::*
	cpe:2.3:o:microsoft:windows_10:1703:::::::*
	cpe:2.3:o:microsoft:windows_10:1709:::::::*
	cpe:2.3:o:microsoft:windows_10:1803:::::::*
	cpe:2.3:o:microsoft:windows_10:1809:::::::*
	cpe:2.3:o:microsoft:windows_10:1903:::::::*
	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
	cpe:2.3:o:microsoft:windows_8.1:-:::::::*
	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:::::itanium:*
	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:::::x64:*
	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
	cpe:2.3:o:microsoft:windows_server_2016:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2016:1803:::::::*
	cpe:2.3:o:microsoft:windows_server_2016:1903:::::::*
	cpe:2.3:o:microsoft:windows_server_2019:-:::::::*

History

20 May 2025, 18:15

Type	Values Removed	Values Added
Summary	(en) A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages.To exploit this vulnerability, an attacker could send a specially crafted authentication request, aka 'Microsoft Windows Security Feature Bypass Vulnerability'.	(en) A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages. To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges. The issue has been addressed by changing how NTLM validates network authentication messages.
References		() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1019 -

21 Nov 2024, 04:35

Type	Values Removed	Values Added
References	~~() http://packetstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.html - Third Party Advisory~~	() http://packetstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.html - Third Party Advisory
References	~~() https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1019 - Patch, Vendor Advisory~~	() https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1019 - Patch, Vendor Advisory

Information

Published : 2019-06-12 14:29

Updated : 2025-05-20 18:15

NVD link : CVE-2019-1019

Mitre link : CVE-2019-1019

CVE.ORG link : CVE-2019-1019

JSON object : View

Products Affected

microsoft

windows_server_2016
windows_7
windows_server_2008
windows_rt_8.1
windows_8.1
windows_server_2019
windows_10
windows_server_2012

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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An attacker who successfully exploited this vulnerability could access another machine using the original user privileges.\nThe issue has been addressed by changing how NTLM validates network authentication messages."}, {"lang": "es", "value": "Existe una vulnerabilidad de omisi\u00f3n de la caracter\u00edstica de seguridad cuando un mensaje de NETLOGON puede obtener la clave de sesi\u00f3n y firmar los mensajes. Para aprovechar esta vulnerabilidad, un atacante podr\u00eda enviar una solicitud de autenticaci\u00f3n especialmente dise\u00f1ada, tambi\u00e9n se conoce como 'Microsoft Windows Security Feature Bypass Vulnerability'."}], "lastModified": "2025-05-20T18:15:36.920", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21540673-614A-4D40-8BD7-3F07723803B0"}, {"criteria": "cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E01A4CCA-4C43-46E0-90E6-3E4DBFBACD64"}, {"criteria": "cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AEE2E768-0F45-46E1-B6D7-087917109D98"}, {"criteria": "cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "83B14968-3985-43C3-ACE5-8307196EFAE3"}, {"criteria": "cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7CB85C75-4D35-480E-843D-60579EC75FCB"}, {"criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6B8F3DD2-A145-4AF1-8545-CC42892DA3D1"}, {"criteria": "cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3FB5CDAE-C713-4D9D-9D6A-2C2E8924A4BB"}, {"criteria": "cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C2B1C231-DE19-4B8F-A4AA-5B3A65276E46"}, {"criteria": "cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E93068DB-549B-45AB-8E5C-00EB5D8B5CF8"}, {"criteria": "cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C6CE5198-C498-4672-AF4C-77AB4BE06C5C"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5F422A8C-2C4E-42C8-B420-E0728037E15C"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*", "vulnerable": true, "matchCriteriaId": "B320A104-9037-487E-BC9A-62B4A6B49FD0"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAACE735-003E-4ACB-A82E-C0CF97D7F013"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5B921FDB-8E7D-427E-82BE-4432585080CF"}, {"criteria": "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DB79EE26-FC32-417D-A49C-A1A63165A968"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}

8.5 /10