The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5131-1 advisory.

    Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially     crafted website, an attacker could potentially exploit these to cause a denial of service, bypass security     restrictions, spoof the browser UI, confuse the user, conduct phishing attacks, or execute arbitrary code.
    (CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509)

    It was discovered that the 'Copy Image Link' context menu action would copy the final image URL after     redirects. If a user were tricked into copying and pasting a link for an embedded image that triggered     authentication flows back to the page, an attacker could potentially exploit this to steal authentication     tokens.

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.

Detections

Analytics

Ubuntu 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-5131-1)

critical Nessus Plugin ID 154883

Version 1.9

Version 1.8

Version 1.7

Version 1.7

Version 1.6

Version 1.9 Aug 28, 2024, 7:43 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202408281943
Version 1.8 Oct 16, 2023, 9:38 PM Detection Plugin metadata Plugin Feed: 202310162138
Version 1.7 Jan 18, 2023, 9:01 AM Logic Changes (Added support for s390x) Plugin Feed: 202301180901
Version 1.7 Oct 16, 2023, 7:25 PM Detection Plugin metadata Plugin Feed: 202310161925
Version 1.6 Jan 4, 2023, 11:46 PM Regenerated based on advisory update Plugin Feed: 202301042346