CVE-2020-1243 (GCVE-0-2020-1243)

Vulnerability from cvelistv5 – Published: 2020-10-16 22:18 – Updated: 2024-08-04 06:31
VLAI?
Summary
<p>A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.</p> <p>To exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.</p> <p>The security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.</p>
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CWE
  • Denial of Service
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1803 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_10_1803:*:*:*:*:*:*:x64:*
 Create a notification for this product.
    Microsoft Windows 10 Version 1809 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
 Create a notification for this product.
    Microsoft Windows Server 2019 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows 10 Version 1909 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:*
 Create a notification for this product.
    Microsoft Windows Server, version 1909 (Server Core installation) Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_server_1909:*:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows 10 Version 1709 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows 10 Version 1903 for x64-based Systems Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows Server, version 1903 (Server Core installation) Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_server_1903:*:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows 10 Version 2004 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
 Create a notification for this product.
    Microsoft Windows Server version 2004 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows 10 Version 1607 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
 Create a notification for this product.
    Microsoft Windows Server 2016 Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
 Create a notification for this product.
    Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.0 , < publication (custom)
    cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
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    "nvd": "{\"cve\":{\"id\":\"CVE-2020-1243\",\"sourceIdentifier\":\"secure@microsoft.com\",\"published\":\"2020-10-16T23:15:17.680\",\"lastModified\":\"2024-11-21T05:10:03.830\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"\u003cp\u003eA denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.\u003c/p\u003e\\n\u003cp\u003eTo exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.\u003c/p\u003e\\n\u003cp\u003eThe security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.\u003c/p\u003e\\n\"},{\"lang\":\"es\",\"value\":\"Se presenta una vulnerabilidad de denegaci\u00f3n de servicio cuando Microsoft Hyper-V en un servidor host presenta un fallo al comprobar apropiadamente datos maliciosos espec\u00edficos de un usuario en un sistema operativo invitado. Para explotar la vulnerabilidad, un atacante que ya presenta una cuenta privilegiada en un sistema operativo invitado, ejecut\u00e1ndose como una m\u00e1quina virtual, podr\u00eda correr una aplicaci\u00f3n especialmente dise\u00f1ada. La actualizaci\u00f3n de seguridad aborda la vulnerabilidad al resolver las condiciones en las que Hyper-V no podr\u00eda manejar estas peticiones, tambi\u00e9n se conoce como \\\"Windows Hyper-V Denial of Service Vulnerability\\\"\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"secure@microsoft.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":4.6,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.9,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*\",\"matchCriteriaId\":\"897A48D7-FCA1-4560-AFBB-718AF19BA3A2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:x64:*\",\"matchCriteriaId\":\"1B3308A0-1699-4A4A-8D6B-AB4E4C825C95\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:x64:*\",\"matchCriteriaId\":\"1981BA0D-0920-40C0-8A6A-5D5A1B221560\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*\",\"matchCriteriaId\":\"6CF580BA-6938-40F6-9D86-F43044A6BACA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x64:*\",\"matchCriteriaId\":\"2487AF09-F003-482A-BD42-31F6AEAA033F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:*\",\"matchCriteriaId\":\"09D9A720-8D3C-4699-AC57-CB4531E5BFEB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5B921FDB-8E7D-427E-82BE-4432585080CF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C253A63F-03AB-41CB-A03A-B2674DEA98AA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0B60D940-80C7-49F0-8F4E-3F99AC15FA82\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB79EE26-FC32-417D-A49C-A1A63165A968\"}]}]}],\"references\":[{\"url\":\"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1243\",\"source\":\"secure@microsoft.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1243\",\"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.



Detection rules are retrieved from Rulezet.