An object tag with a data URI did not correctly inherit the document's Content Security Policy. This allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed data: URIs. This vulnerability affects Firefox < 70.

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

  - An object tag with a data URI did not correctly inherit the document's Content Security Policy. This     allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed data: URIs. This     vulnerability affects Firefox < 70. (CVE-2019-17000)

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

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4165-1 advisory.

    Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service, bypass security     restrictions, bypass same-origin restrictions, conduct cross-site scripting (XSS) attacks, bypass content     security policy (CSP) protections, or execute arbitrary code.

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 Firefox installed on the remote Windows host is prior to 70.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2019-34 advisory, including the following:

  - Incorrect derivation of a packet length in WebRTC in Google Chrome prior to 68.0.3440.75 allowed a remote     attacker to potentially exploit heap corruption via a crafted video file. (CVE-2018-6156)

  - In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to     document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber)     then resulted in a heap-based buffer over-read. (CVE-2019-15903)

  - When storing a value in IndexedDB, the value's prototype chain is followed and it was possible to retain a     reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a     potentially exploitable crash. (CVE-2019-11757)

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

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 70.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2019-34 advisory, including the following:

  - Incorrect derivation of a packet length in WebRTC in Google Chrome prior to 68.0.3440.75 allowed a remote     attacker to potentially exploit heap corruption via a crafted video file. (CVE-2018-6156)

  - In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to     document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber)     then resulted in a heap-based buffer over-read. (CVE-2019-15903)

  - When storing a value in IndexedDB, the value's prototype chain is followed and it was possible to retain a     reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a     potentially exploitable crash. (CVE-2019-11757)

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

ID	Name	Product	Family	Severity
245372	Linux Distros Unpatched Vulnerability : CVE-2019-17000	Nessus	Misc.	medium
130200	Ubuntu 16.04 LTS / 18.04 LTS : Firefox vulnerabilities (USN-4165-1)	Nessus	Ubuntu Local Security Checks	high
130170	Mozilla Firefox < 70.0 Multiple Vulnerabilities	Nessus	Windows	high
130169	Mozilla Firefox < 70.0 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	high

Detections

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CVE-2019-17000

medium

Tenable Plugins

medium

high

high

high