Microsoft addresses 73 CVEs, including one vulnerability exploited in the wild.

Microsoft’s August 2023 Patch Tuesday Addresses 73 CVEs (CVE-2023-38180)

.NET and Visual Studio Denial of Service Vulnerability

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2023:4645 advisory.

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

  - .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

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

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2023:4643 advisory.

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

  - .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-326 advisory.

    2024-07-17: CVE-2023-38180 was added to this advisory.

    .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

    .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The version of Microsoft .NET Core SDK installed on the remote host is 6.0.x prior to 6.0.121, 6.0.x prior to 6.0.316, 6.0.x prior to 6.0.413, 7.0.x prior to 7.0.110 or 7.0.x prior to 307. It is, therefore, affected by multiple vulnerabilities, as follows:

  - A vulnerability exists when some dotnet commands are used in directories with weaker permissions which   can result in remote code execution. (CVE-2023-35390)   
  - A vulnerability exists in .NET 6.0 and .NET 7.0 applications using SignalR when redis backplane use might   result in information disclosure. (CVE-2023-35391)

  - A vulnerability exists in Kestrel where, on detecting a potentially malicious client, Kestrel will   sometimes fail to disconnect it, resulting in denial of service. (CVE-2023-38180)

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

The remote Fedora 37 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-25112489ab advisory.

    This is the August 2023 update for .NET 6 and .NET 7.

    Release Notes:

    - 7.0 SDK: https://github.com/dotnet/core/blob/main/release-notes/7.0/7.0.10/7.0.110.md
    - 7.0 Runtime: https://github.com/dotnet/core/blob/main/release-notes/7.0/7.0.10/7.0.10.md
    - 6.0 SDK: https://github.com/dotnet/core/blob/main/release-notes/6.0/6.0.21/6.0.121.md
    - 6.0 Runtime: https://github.com/dotnet/core/blob/main/release-notes/6.0/6.0.21/6.0.21.md

Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

The remote Fedora 38 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2023-cbc688b8ca advisory.

    This is the August 2023 update for .NET 6 and .NET 7.

    Release Notes:

    - 7.0 SDK: https://github.com/dotnet/core/blob/main/release-notes/7.0/7.0.10/7.0.110.md
    - 7.0 Runtime: https://github.com/dotnet/core/blob/main/release-notes/7.0/7.0.10/7.0.10.md
    - 6.0 SDK: https://github.com/dotnet/core/blob/main/release-notes/6.0/6.0.21/6.0.121.md
    - 6.0 Runtime: https://github.com/dotnet/core/blob/main/release-notes/6.0/6.0.21/6.0.21.md

Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:4643 advisory.

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

  - .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

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

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:4645 advisory.

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

  - .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

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

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-4644 advisory.

    [6.0.121-1.0.1]
    - Update to .NET SDK 6.0.121 and Runtime 6.0.21
    - Resolves: RHBZ#2228567

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-4642 advisory.

    [7.0.110-1.0.1]
    - Update to .NET SDK 7.0.110 and Runtime 7.0.10
    - Resolves: RHBZ#2228571

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-4643 advisory.

    [7.0.110-1.0.1]
    - Update to .NET SDK 7.0.110 and Runtime 7.0.10
    - Resolves: RHBZ#2228571

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2023-4645 advisory.

    [6.0.121-1.0.1]
    - Update to .NET SDK 6.0.121 and Runtime 6.0.21
    - Resolves: RHBZ#2228567

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:4642 advisory.

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

  - .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

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

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:4644 advisory.

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

  - .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4644 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    New versions of .NET that address a security vulnerability are now available. The updated versions are     .NET SDK 6.0.121 and .NET Runtime 6.0.21.

    Security Fix(es):

    * dotnet: RCE under dotnet commands (CVE-2023-35390)

    * dotnet: Kestrel vulnerability to slow read attacks leading to Denial of Service attack (CVE-2023-38180)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4643 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    New versions of .NET that address a security vulnerability are now available. The updated versions are     .NET SDK 7.0.110 and .NET Runtime 7.0.10.

    Security Fix(es):

    * dotnet: RCE under dotnet commands (CVE-2023-35390)

    * dotnet: Kestrel vulnerability to slow read attacks leading to Denial of Service attack (CVE-2023-38180)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4645 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    New versions of .NET that address a security vulnerability are now available. The updated versions are     .NET SDK 6.0.121 and .NET Runtime 6.0.21.

    Security Fix(es):

    * dotnet: RCE under dotnet commands (CVE-2023-35390)

    * dotnet: Kestrel vulnerability to slow read attacks leading to Denial of Service attack (CVE-2023-38180)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4639 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    Security Fix(es):

    * dotnet: RCE under dotnet commands (CVE-2023-35390)

    * dotnet: Kestrel vulnerability to slow read attacks leading to Denial of Service attack (CVE-2023-38180)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4641 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    New versions of .NET that address a security vulnerability are now available. The updated versions are     .NET SDK 6.0.121 and .NET Runtime 6.0.21.

    Security Fix(es):

    * dotnet: RCE under dotnet commands (CVE-2023-35390)

    * dotnet: Kestrel vulnerability to slow read attacks leading to Denial of Service attack (CVE-2023-38180)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4642 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    New versions of .NET that address a security vulnerability are now available. The updated versions are     .NET SDK 7.0.110 and .NET Runtime 7.0.10.

    Security Fix(es):

    * dotnet: RCE under dotnet commands (CVE-2023-35390)

    * dotnet: Kestrel vulnerability to slow read attacks leading to Denial of Service attack (CVE-2023-38180)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:4640 advisory.

    .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new     APIs, and it includes a CLR implementation.

    Security Fix(es):

    * dotnet: RCE under dotnet commands (CVE-2023-35390)

    * dotnet: Kestrel vulnerability to slow read attacks leading to Denial of Service attack (CVE-2023-38180)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The remote Ubuntu 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6278-2 advisory.

    USN-6278-1 fixed several vulnerabilities in .NET. This update provides the corresponding updates for     Ubuntu 22.04 LTS.



Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

The Microsoft Visual Studio Products are missing security updates. It is, therefore, affected by multiple vulnerabilities:

  - .NET Core and Visual Studio Denial of Service Vulnerability. (CVE-2023-38178)

  - .NET and Visual Studio Remote Code Execution Vulnerability. (CVE-2023-35390)

  - .NET and Visual Studio Denial of Service Vulnerability. (CVE-2023-38180)

  - ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability. (CVE-2023-35391)

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

The remote Ubuntu 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6278-1 advisory.

    It was discovered that .NET did not properly handle the execution of certain commands. An attacker could     possibly use this issue to achieve remote code execution. (CVE-2023-35390)

    Benoit Foucher discovered that .NET did not properly implement the QUIC stream limit in HTTP/3. An     attacker could possibly use this issue to cause a denial of service. (CVE-2023-38178)

    It was discovered that .NET did not properly handle the disconnection of potentially malicious clients     interfacing with a Kestrel server. An attacker could possibly use this issue to cause a denial of service.
    (CVE-2023-38180)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 2023_Aug_08 advisory.

  - .NET and Visual Studio Remote Code Execution Vulnerability (CVE-2023-35390)

  - ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability (CVE-2023-35391)

  - .NET Core and Visual Studio Denial of Service Vulnerability (CVE-2023-38178)

  - .NET and Visual Studio Denial of Service Vulnerability (CVE-2023-38180)

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
182726	Rocky Linux 8 : .NET 6.0 (RLSA-2023:4645)	Nessus	Rocky Linux Local Security Checks	high
182722	Rocky Linux 8 : .NET 7.0 (RLSA-2023:4643)	Nessus	Rocky Linux Local Security Checks	high
181148	Amazon Linux 2023 : aspnetcore-runtime-6.0, aspnetcore-targeting-pack-6.0, dotnet (ALAS2023-2023-326)	Nessus	Amazon Linux Local Security Checks	high
180502	Security Update for .NET Core SDK (August 2023)	Nessus	Windows	high
179998	Fedora 37 : dotnet6.0 / dotnet7.0 (2023-25112489ab)	Nessus	Fedora Local Security Checks	high
179996	Fedora 38 : dotnet6.0 / dotnet7.0 (2023-cbc688b8ca)	Nessus	Fedora Local Security Checks	high
179899	AlmaLinux 8 : .NET 7.0 (ALSA-2023:4643)	Nessus	Alma Linux Local Security Checks	high
179898	AlmaLinux 8 : .NET 6.0 (ALSA-2023:4645)	Nessus	Alma Linux Local Security Checks	high
179892	Oracle Linux 9 : .NET / 6.0 (ELSA-2023-4644)	Nessus	Oracle Linux Local Security Checks	high
179891	Oracle Linux 9 : .NET / 7.0 (ELSA-2023-4642)	Nessus	Oracle Linux Local Security Checks	high
179878	Oracle Linux 8 : .NET / 7.0 (ELSA-2023-4643)	Nessus	Oracle Linux Local Security Checks	high
179877	Oracle Linux 8 : .NET / 6.0 (ELSA-2023-4645)	Nessus	Oracle Linux Local Security Checks	high
179834	AlmaLinux 9 : .NET 7.0 (ALSA-2023:4642)	Nessus	Alma Linux Local Security Checks	high
179833	AlmaLinux 9 : .NET 6.0 (ALSA-2023:4644)	Nessus	Alma Linux Local Security Checks	high
179816	RHEL 9 : .NET 6.0 (RHSA-2023:4644)	Nessus	Red Hat Local Security Checks	high
179815	RHEL 8 : .NET 7.0 (RHSA-2023:4643)	Nessus	Red Hat Local Security Checks	high
179814	RHEL 8 : .NET 6.0 (RHSA-2023:4645)	Nessus	Red Hat Local Security Checks	high
179813	RHEL 9 : .NET 6.0 (RHSA-2023:4639)	Nessus	Red Hat Local Security Checks	high
179812	RHEL 7 : rh-dotnet60-dotnet (RHSA-2023:4641)	Nessus	Red Hat Local Security Checks	high
179811	RHEL 9 : .NET 7.0 (RHSA-2023:4642)	Nessus	Red Hat Local Security Checks	high
179809	RHEL 8 : .NET 6.0 (RHSA-2023:4640)	Nessus	Red Hat Local Security Checks	high
179691	Ubuntu 22.04 LTS : .NET vulnerabilities (USN-6278-2)	Nessus	Ubuntu Local Security Checks	high
179645	Security Updates for Microsoft Visual Studio Products (August 2023)	Nessus	Windows : Microsoft Bulletins	high
179584	Ubuntu 23.04 : .NET vulnerabilities (USN-6278-1)	Nessus	Ubuntu Local Security Checks	high
179502	Security Update for Microsoft .NET Core (August 2023)	Nessus	Windows	high

Detections

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CVE-2023-38180

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