The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6509-1 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, obtain     sensitive information across domains, or execute arbitrary code. (CVE-2023-6206, CVE-2023-6210,     CVE-2023-6211, CVE-2023-6212, CVE-2023-6213)

    It was discovered that Firefox did not properly manage memory when images were created on the canvas     element. An attacker could potentially exploit this issue to obtain sensitive information. (CVE-2023-6204)

    It discovered that Firefox incorrectly handled certain memory when using a MessagePort. An attacker could     potentially exploit this issue to cause a denial of service. (CVE-2023-6205)

    It discovered that Firefox incorrectly did not properly manage ownership in ReadableByteStreams. An     attacker could potentially exploit this issue to cause a denial of service. (CVE-2023-6207)

    It discovered that Firefox incorrectly did not properly manage copy operations when using Selection API in     X11. An attacker could potentially exploit this issue to obtain sensitive information. (CVE-2023-6208)

    Rachmat Abdul Rokhim discovered that Firefox incorrectly handled parsing of relative URLS starting with     ///. An attacker could potentially exploit this issue to cause a denial of service. (CVE-2023-6209)

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 20.04 LTS : Firefox vulnerabilities (USN-6509-1)

high Nessus Plugin ID 186208

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.1

Version 1.0

Version 1.4 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 1.3 Dec 22, 2023, 10:57 AM IAVM reference Plugin Feed: 202312221057
Version 1.2 Dec 1, 2023, 12:20 PM STIG Severity (set to "I") IAVM reference Plugin Feed: 202312011220
Version 1.1 Nov 29, 2023, 3:21 PM CVSS metrics ("CVSSv2 score" set to 10.0. "CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C". "CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H". "CVSSv3 score" set to 8.8) Plugin Feed: 202311291521
Version 1.1 Dec 1, 2023, 10:14 AM STIG Severity (set to "I") IAVM reference Plugin Feed: 202312011014
Version 1.0 Nov 23, 2023, 10:34 AM New Plugin Feed: 202311231034