Summary Microsoft was notified that an elevation of privilege vulnerability exists in Windows Update, potentially enabling an attacker with basic user privileges to reintroduce previously mitigated vulnerabilities or circumvent some features of Virtualization Based Security (VBS). However, an attacker attempting to exploit this vulnerability requires additional interaction by a privileged user to be successful. Microsoft has developed a security update to mitigate this threat which was made available October 08, 2024 and is provided in the Security Updates table of this CVE for customers to download. **Note:**Depending on your version of Windows, additional steps may be required to update Windows Recovery Environment (WinRE) to be protected from this vulnerability. Please refer to the FAQ section for more information. Guidance for customers who cannot immediately implement the update is provided in the Recommended Actions section of this CVE to help reduce the risks associated with this vulnerability and to protect their systems. If there are any further updates regarding mitigations for this vulnerability, this CVE will be updated and customers will be notified. We highly encourage customers to subscribe to Security Update Guide notifications to receive an alert if an update occurs. Details A security researcher informed Microsoft of an elevation of privilege vulnerability in Windows Update potentially enabling an attacker with basic user privileges to reintroduce previously mitigated vulnerabilities or circumvent some features of VBS. For exploitation to succeed, an attacker must trick or convince an Administrator or a user with delegated permissions into performing a system restore which inadvertently triggers the vulnerability. Microsoft has developed a security update to mitigate this threat which was made available October 08, 2024 and is provided in the Security Updates table of this CVE for customers to download. **Note:**Depending on your version of Windows, additional steps may be required to update Windows Recovery Environment (WinRE) to be protected from this vulnerability. Please refer to the FAQ section for more information. Guidance for customers who cannot immediately implement the update is provided in the Recommended Actions section of this CVE to help reduce the risks associated with this vulnerability and to protect their systems. If there are any... See more at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38202

The remote Windows host is missing security update 5044285. It is, therefore, affected by multiple vulnerabilities

  - libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect     an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte     localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some     however accept the input pointer and add that memory to its list of available chunks. This leads to the     overwriting of nearby stack memory. The content of the overwrite is decided by the `free()`     implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this     flaw is a crash, although it cannot be ruled out that more serious results can be had in special     circumstances. (CVE-2024-6197)   
  - Remote Desktop Client Remote Code Execution Vulnerability (CVE-2024-43599)

  - An attacker could exploit a use after free vulnerability within the OS SAPI component to execute     arbitrary code in the context of the compromised user to disclose sensitive information, compromise     system integrity or impact the availability of the victim's system. (CVE-2024-43574)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5044288. It is, therefore, affected by multiple vulnerabilities

  - libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect     an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte     localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some     however accept the input pointer and add that memory to its list of available chunks. This leads to the     overwriting of nearby stack memory. The content of the overwrite is decided by the `free()`     implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this     flaw is a crash, although it cannot be ruled out that more serious results can be had in special     circumstances. (CVE-2024-6197)

  - Remote Desktop Client Remote Code Execution Vulnerability (CVE-2024-43599)

  - An attacker could exploit a use after free vulnerability within the OS SAPI component to execute     arbitrary code in the context of the compromised user to disclose sensitive information, compromise     system integrity or impact the availability of the victim's system. (CVE-2024-43574)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5044293. It is, therefore, affected by multiple vulnerabilities

  - Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability (CVE-2024-38212,     CVE-2024-38261, CVE-2024-38265, CVE-2024-43453, CVE-2024-43549, CVE-2024-43564, CVE-2024-43589,     CVE-2024-43592, CVE-2024-43593, CVE-2024-43607, CVE-2024-43608, CVE-2024-43611)

  - Windows Netlogon Elevation of Privilege Vulnerability (CVE-2024-38124)

  - Remote Desktop Client Remote Code Execution Vulnerability (CVE-2024-43599)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5044280. It is, therefore, affected by multiple vulnerabilities

  - libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect     an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte     localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some     however accept the input pointer and add that memory to its list of available chunks. This leads to the     overwriting of nearby stack memory. The content of the overwrite is decided by the `free()`     implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this     flaw is a crash, although it cannot be ruled out that more serious results can be had in special     circumstances. (CVE-2024-6197)

  - Remote Desktop Client Remote Code Execution Vulnerability (CVE-2024-43599)

  - An attacker could exploit a use after free vulnerability within the OS SAPI component to execute     arbitrary code in the context of the compromised user to disclose sensitive information, compromise     system integrity or impact the availability of the victim's system. (CVE-2024-43574)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5044281. It is, therefore, affected by multiple vulnerabilities

  - libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect     an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte     localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some     however accept the input pointer and add that memory to its list of available chunks. This leads to the     overwriting of nearby stack memory. The content of the overwrite is decided by the `free()`     implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this     flaw is a crash, although it cannot be ruled out that more serious results can be had in special     circumstances. (CVE-2024-6197)

  - Remote Desktop Client Remote Code Execution Vulnerability (CVE-2024-43599)

  - An attacker could exploit a use after free vulnerability within the OS SAPI component to execute     arbitrary code in the context of the compromised user to disclose sensitive information, compromise     system integrity or impact the availability of the victim's system. (CVE-2024-43574)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5044273. It is, therefore, affected by multiple vulnerabilities

  - libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect     an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte     localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some     however accept the input pointer and add that memory to its list of available chunks. This leads to the     overwriting of nearby stack memory. The content of the overwrite is decided by the `free()`     implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this     flaw is a crash, although it cannot be ruled out that more serious results can be had in special     circumstances. (CVE-2024-6197)

  - Remote Desktop Client Remote Code Execution Vulnerability (CVE-2024-43599)

  - An attacker could exploit a use after free vulnerability within the OS SAPI component to execute     arbitrary code in the context of the compromised user to disclose sensitive information, compromise     system integrity or impact the availability of the victim's system. (CVE-2024-43574)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Windows host is missing security update 5044277. It is, therefore, affected by multiple vulnerabilities

  - libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect     an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte     localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some     however accept the input pointer and add that memory to its list of available chunks. This leads to the     overwriting of nearby stack memory. The content of the overwrite is decided by the `free()`     implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this     flaw is a crash, although it cannot be ruled out that more serious results can be had in special     circumstances. (CVE-2024-6197)   
  - Remote Desktop Client Remote Code Execution Vulnerability (CVE-2024-43599)

  - An unauthenticated attacker could send a specially crafted protocol message to a Routing and Remote     Access Service (RRAS) server, which could lead to remote code execution (RCE) on the RAS server machine.
    (CVE-2024-43607)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
208304	KB5044285: Windows 11 version 22H2 / 23H2 Security Update (October 2024)	Nessus	Windows : Microsoft Bulletins	high
208301	KB5044288: Windows 11 version 22H2 / Windows Server version 23H2 Security Update (October 2024)	Nessus	Windows : Microsoft Bulletins	critical
208298	KB5044293: Windows 10 Version 1607 / Windows Server 2016 Security Update (October 2024)	Nessus	Windows : Microsoft Bulletins	critical
208296	KB5044280: Windows 11 version 21H2 Security Update (October 2024)	Nessus	Windows : Microsoft Bulletins	high
208295	KB5044281: Windows Server 2022 / Azure Stack HCI 22H2 Security Update (October 2024)	Nessus	Windows : Microsoft Bulletins	critical
208292	KB5044273: Windows 10 version 21H2 / Windows 10 Version 22H2 Security Update (October 2024)	Nessus	Windows : Microsoft Bulletins	high
208285	KB5044277: Windows 10 version 1809 / Windows Server 2019 Security Update (October 2024)	Nessus	Windows : Microsoft Bulletins	critical

Detections

Analytics

CVE-2024-38202

high

Tenable Plugins

high

critical

critical

high

critical

high

critical