Mozilla developers reported memory safety bugs present in Firefox 80. 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. This vulnerability affects Firefox < 81.

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

  - Mozilla developers reported memory safety bugs present in Firefox 80. 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. This vulnerability affects Firefox < 81. (CVE-2020-15674)

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

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4546-1 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, conduct cross-     site scripting (XSS) attacks, spoof the site displayed in the download dialog, 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 81.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-42 advisory. 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 81.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-42 advisory. 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
248161	Linux Distros Unpatched Vulnerability : CVE-2020-15674	Nessus	Misc.	high
140925	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-4546-1)	Nessus	Ubuntu Local Security Checks	high
140732	Mozilla Firefox < 81.0	Nessus	Windows	high
140731	Mozilla Firefox < 81.0	Nessus	MacOS X Local Security Checks	high

Detections

Analytics

CVE-2020-15674

high

Tenable Plugins

high

high

high

high