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

  - When Python was installed on Windows, a python file being served with the MIME type of text/plain could be     executed by Python instead of being opened as a text file when the Open option was selected upon download.
    *Note: this issue only occurs on Windows. Other operating systems are unaffected.*. This vulnerability     affects Firefox < 72. (CVE-2019-17019)

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

The version of Firefox installed on the remote Windows host is prior to 72.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-01 advisory, including the following:

  - During the initialization of a new content process, a pointer offset can be manipulated leading to     memory corruption and a potentially exploitable crash in the parent process. (CVE-2019-17015)

  - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly     rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in     data exfiltration. (CVE-2019-17016)

  - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code.
    (CVE-2019-17017)

  - When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve     the accuracy of the keyboard. (CVE-2019-17018)

  - When Python was installed on Windows, a python file being served with the MIME type of text/plain could     be executed by Python instead of being opened as a text file when the Open option was selected upon     download. (CVE-2019-17019)

  - If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the     Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g.
    includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to     the XML document. (CVE-2019-17020)

  - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process. (CVE-2019-17021)

  - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape     < and > characters. Because the resulting string is pasted directly into the text node of the element     this does not result in a direct injection into the webpage; however, if a webpage subsequently copies     the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two     WYSIWYG editors were identified with this behavior, more may exist. (CVE-2019-17022)     
  - After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3,     resulting in an invalid state transition in the TLS State Machine. If the client gets into this state,     incoming Application Data records will be ignored. (CVE-2019-17023)

  - Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in     Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume     that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2019-17024)

  - Mozilla developers Karl Tomlinson, Jason Kratzer, Tyson Smith, Jon Coppeard, and Christian Holler     reported memory safety bugs present in Firefox 71. Some of these bugs showed evidence of memory     corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. (CVE-2019-17025)

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

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - Python が Windows にインストールされている場合、テキスト/平文の MIME タイプで提供される python ファイルは、ダウンロード時に [Open] オプションが選択されると、テキストファイルとして開かれる代わりに Python によって実行される可能性があります。
    *注意この問題は Windows でのみ発生します。その他のオペレーティングシステムは影響を受けません。* この脆弱性の影響を受けるのは、Firefox < 72です。(CVE-2019-17019)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

リモートの Windows ホストにインストールされている Firefox のバージョンは、72.0より前です。It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-01 advisory, including the following:

  - During the initialization of a new content process, a pointer offset can be manipulated leading to memory corruption and a potentially exploitable crash in the parent process. (CVE-2019-17015)

  - <style> タグをクリップボードからリッチテキストエディターに貼り付ける際に、CSS サニタイザーが不適切に @namespace ルールを書き換えます。 This could allow for injection into certain types of websites resulting in data exfiltration. (CVE-2019-17016)

  - オブジェクトタイプのケース処理が欠落しているため、型の取り違え (Type Confusion) の脆弱性が発生し、クラッシュが引き起こされます。十分な労力をもってすれば、これを悪用し、任意のコードを実行することが可能と考えられます。
    (CVE-2019-17017)

  - When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve the accuracy of the keyboard. (CVE-2019-17018)

  - When Python was installed on Windows, a python file being served with the MIME type of text/plain could be executed by Python instead of being opened as a text file when the Open option was selected upon download. (CVE-2019-17019)

  - If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g.
    includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to the XML document. (CVE-2019-17020)

  - During the initialization of a new content process, a race condition occurs that can allow a content process to disclose heap addresses from the parent process. (CVE-2019-17021)

  - <style> タグをクリップボードからリッチテキストエディターに貼り付ける際に、CSS サニタイザーが < and > 文字をエスケープしません。 結果の文字列は要素のテキストノードに直接貼り付けられるため、これはWebページへの直接注入にはなりません。ただし、その後 Web ページがノードの innerHTML をコピーして別の innerHTML に割り当てると、XSS の脆弱性が発生します。Two WYSIWYG editors were identified with this behavior, more may exist. (CVE-2019-17022)     
  - HelloRetryRequest の送信後、クライアントが TLS 1.3 より低いプロトコルをネゴシエートして、TLS の状態マシンで無効な状態移行を引き起こす可能性があります。If the client gets into this state, incoming Application Data records will be ignored. (CVE-2019-17023)

  - Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in Firefox 71 and Firefox ESR 68.3. これらのバグの一部にはメモリ破損の証拠が示されており、当社では、十分な労力をもってすればこれらの一部を悪用し、任意のコードを実行することが可能であると推測しています。(CVE-2019-17024)

  - Mozilla developers Karl Tomlinson, Jason Kratzer, Tyson Smith, Jon Coppeard, and Christian Holler reported memory safety bugs present in Firefox 71. これらのバグの一部にはメモリ破損の証拠が示されており、当社では、十分な労力をもってすればこれらの一部を悪用し、任意のコードを実行することが可能であると推測しています。(CVE-2019-17025)

Nessusはこの問題をテストしておらず、代わりにアプリケーションの自己報告されたバージョン番号にのみ依存しています。

遠端 Windows 主機上安裝的 Firefox 版本比 72.0 舊。因此，會受到 mfsa2020-01 公告中所提及的多個弱點影響，包括下列：- 可在新的內容處理程序初始化期間操控指標位移，這會導致記憶體損毀及父項處理程序中可能遭到惡意利用的當機。(CVE-2019-17015) - 貼上時 <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly     rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in     data exfiltration. (CVE-2019-17016) - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2019-17017) - When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve     the accuracy of the keyboard. (CVE-2019-17018) - When Python was installed on Windows, a python file being served with the MIME type of text/plain could     be executed by Python instead of being opened as a text file when the Open option was selected upon     download. (CVE-2019-17019) - If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the     Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g. includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to     the XML document. (CVE-2019-17020) - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process. (CVE-2019-17021) - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape     < and > characters. Because the resulting string is pasted directly into the text node of the element     this does not result in a direct injection into the webpage; however, if a webpage subsequently copies     the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two     WYSIWYG editors were identified with this behavior, more may exist. (CVE-2019-17022)      - After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3,     resulting in an invalid state transition in the TLS State Machine. If the client gets into this state,     incoming Application Data records will be ignored. (CVE-2019-17023) - Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in     Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume     that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2019-17024) - Mozilla developers Karl Tomlinson, Jason Kratzer, Tyson Smith, Jon Coppeard, and Christian Holler     reported memory safety bugs present in Firefox 71. Some of these bugs showed evidence of memory     corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. (CVE-2019-17025) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

远程 Windows 主机上安装的 Firefox 版本低于 72.0。因此受到 mfsa2020-01 公告中提及的多个漏洞的影响，包括如下：- 在初始化新内容进程期间，指针偏移可被操控，从而导致父进程中内存损坏以及潜在可利用的崩溃。(CVE-2019-17015) - 当粘贴 <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly     rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in     data exfiltration. (CVE-2019-17016) - Due to a missing case handling object types, a type confusion vulnerability could occur, resulting in a     crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2019-17017) - When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve     the accuracy of the keyboard. (CVE-2019-17018) - When Python was installed on Windows, a python file being served with the MIME type of text/plain could     be executed by Python instead of being opened as a text file when the Open option was selected upon     download. (CVE-2019-17019) - If an XML file is served with a Content Security Policy and the XML file includes an XSL stylesheet, the     Content Security Policy will not be applied to the contents of the XSL stylesheet. If the XSL sheet e.g. includes JavaScript, it would bypass any of the restrictions of the Content Security Policy applied to     the XML document. (CVE-2019-17020) - During the initialization of a new content process, a race condition occurs that can allow a content     process to disclose heap addresses from the parent process. (CVE-2019-17021) - When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape     < and > characters. Because the resulting string is pasted directly into the text node of the element     this does not result in a direct injection into the webpage; however, if a webpage subsequently copies     the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two     WYSIWYG editors were identified with this behavior, more may exist. (CVE-2019-17022)      - After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3,     resulting in an invalid state transition in the TLS State Machine. If the client gets into this state,     incoming Application Data records will be ignored. (CVE-2019-17023) - Mozilla developers Jason Kratzer, Christian Holler, and Bob Clary reported memory safety bugs present in     Firefox 71 and Firefox ESR 68.3. Some of these bugs showed evidence of memory corruption and we presume     that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2019-17024) - Mozilla developers Karl Tomlinson, Jason Kratzer, Tyson Smith, Jon Coppeard, and Christian Holler     reported memory safety bugs present in Firefox 71. Some of these bugs showed evidence of memory     corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. (CVE-2019-17025) Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 當 Python 安裝在 Windows 上時若在下載時選取「開啟」選項以 text/plain 的 MIME 類型提供的 python 檔案會由 Python 執行而非以文字檔案形式開啟。
    *注意此問題只會在 Windows 上發生。其他作業系統不受影響。* 此弱點會影響 Firefox < 72。(CVE-2019-17019)

請注意，Nessus 依賴供應商報告的套件存在。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 在 Windows 上安装 Python 时下载时选择“打开”选项时Python 可执行 MIME 类型 text/plain 的 python 文件而非将其作为文本文件打开。
    *注意此问题仅在 Windows 上发生。其他操作系统不受影响。* 此漏洞会影响 Firefox < 72。(CVE-2019-17019)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

ID	名稱	產品	系列	已發布	已更新	嚴重性
248300	Linux Distros Unpatched Vulnerability : CVE-2019-17019	Nessus	Misc.	2025/8/11	2025/8/11	high
132709	Mozilla Firefox < 72.0 Multiple Vulnerabilities	Nessus	Windows	2020/1/8	2024/4/1	high
248300	Linux Distros のパッチ未適用の脆弱性: CVE-2019-17019	Nessus	Misc.	2025/8/11	2025/8/11	high
132709	Mozilla Firefox < 72.0の複数の脆弱性	Nessus	Windows	2020/1/8	2024/4/1	high
132709	Mozilla Firefox < 72.0 多個弱點	Nessus	Windows	2020/1/8	2024/4/1	high
132709	Mozilla Firefox < 72.0 多个漏洞	Nessus	Windows	2020/1/8	2024/4/1	high
248300	Linux Distros 未修補的弱點：CVE-2019-17019	Nessus	Misc.	2025/8/11	2025/8/11	high
248300	Linux Distros 未修补的漏洞：CVE-2019-17019	Nessus	Misc.	2025/8/11	2025/8/11	high

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