There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer.
    Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such
    as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for
    javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are
    no known workarounds for this issue. (CVE-2023-23942)

  - The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version
    3.0.0 and prior to version 3.6.5, a malicious server administrator can recover and modify the contents of
    end-to-end encrypted files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch.
    No known workarounds are available. (CVE-2023-28997)

  - The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version
    3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end
    encrypted folder. They can decrypt files, recover the folder structure, and add new files.​ Users should
    upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.
    (CVE-2023-28998)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer.
    Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such     as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for     javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are     no known workarounds for this issue. (CVE-2023-23942)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2023:0090-1 advisory.

  - Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText     Markup Language into the Desktop Client application in the notifications. It is recommended that the     Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue.
    (CVE-2022-39331)

  - Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText     Markup Language into the Desktop Client application via user status and information. It is recommended     that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue.
    (CVE-2022-39332)

  - Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText     Markup Language into the Desktop Client application. It is recommended that the Nextcloud Desktop client     is upgraded to 3.6.1. There are no known workarounds for this issue. (CVE-2022-39333)

  - Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and     headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS     certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or credentials to a     network attacker. This affects the CLI only. It does not affect the standard GUI desktop Nextcloud     clients, and it does not affect the Nextcloud server. (CVE-2022-39334)

  - The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer.
    Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such     as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for     javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are     no known workarounds for this issue. (CVE-2023-23942)

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

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2023:0171-1 advisory.

  - Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText     Markup Language into the Desktop Client application in the notifications. It is recommended that the     Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue.
    (CVE-2022-39331)

  - Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText     Markup Language into the Desktop Client application via user status and information. It is recommended     that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue.
    (CVE-2022-39332)

  - Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText     Markup Language into the Desktop Client application. It is recommended that the Nextcloud Desktop client     is upgraded to 3.6.1. There are no known workarounds for this issue. (CVE-2022-39333)

  - Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and     headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS     certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or credentials to a     network attacker. This affects the CLI only. It does not affect the standard GUI desktop Nextcloud     clients, and it does not affect the Nextcloud server. (CVE-2022-39334)

  - The Nextcloud Desktop Client is a tool to synchronize files from a Nextcloud Server with your computer.
    Versions prior to 3.6.3 are missing sanitisation on qml labels which are used for basic HTML elements such     as `strong`, `em` and `head` lines in the UI of the desktop client. The lack of sanitisation may allow for     javascript injection. It is recommended that the Nextcloud Desktop Client is upgraded to 3.6.3. There are     no known workarounds for this issue. (CVE-2023-23942)

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	Published	Updated	Severity
405729	Alpine: multiple nextcloud-client packages: security update to 3.6.6-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	medium
405729	Alpine: multiple nextcloud-client packages: security update to 3.6.6-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	10/31/2023	7/2/2026	medium
225845	Linux Distros Unpatched Vulnerability : CVE-2023-23942	Nessus	Misc.	3/5/2025	9/2/2026	medium
174256	openSUSE 15 Security Update : nextcloud-desktop (openSUSE-SU-2023:0090-1)	Nessus	SuSE Local Security Checks	4/13/2023	4/19/2023	medium
178113	openSUSE 15 Security Update : nextcloud-desktop (openSUSE-SU-2023:0171-1)	Nessus	SuSE Local Security Checks	7/11/2023	7/11/2023	medium

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