The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6456-1 advisory.

  - It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by     the user due to an insufficient activation-delay. This vulnerability affects Firefox < 119, Firefox ESR <     115.4, and Thunderbird < 115.4.1. (CVE-2023-5721)

  - Using iterative requests an attacker was able to learn the size of an opaque response, as well as the     contents of a server-supplied Vary header. This vulnerability affects Firefox < 119. (CVE-2023-5722)

  - An attacker with temporary script access to a site could have set a cookie containing invalid characters     using `document.cookie` that could have led to unknown errors. This vulnerability affects Firefox < 119.
    (CVE-2023-5723)

  - Drivers are not always robust to extremely large draw calls and in some cases this scenario could have led     to a crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
    (CVE-2023-5724)

  - A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be     leveraged to collect sensitive user data. This vulnerability affects Firefox < 119, Firefox ESR < 115.4,     and Thunderbird < 115.4.1. (CVE-2023-5725)

  - During garbage collection extra operations were performed on a object that should not be. This could have     led to a potentially exploitable crash. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and     Thunderbird < 115.4.1. (CVE-2023-5728)

  - A malicious web site can enter fullscreen mode while simultaneously triggering a WebAuthn prompt. This     could have obscured the fullscreen notification and could have been leveraged in a spoofing attack. This     vulnerability affects Firefox < 119. (CVE-2023-5729)

  - Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. 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. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and     Thunderbird < 115.4.1. (CVE-2023-5730)

  - Memory safety bugs present in Firefox 118. 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 < 119. (CVE-2023-5731)

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-6456-1)

critical Nessus Plugin ID 184009

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.0

Version 1.0

Version 1.4 Dec 1, 2023, 10:14 AM IAVM reference Plugin Feed: 202312011014
Version 1.3 Nov 2, 2023, 2:21 PM CVSSv2 score source (changed from "CVE-2023-5730" to "CVE-2023-5731") CVSSv3 score source (changed from "CVE-2023-5731" to none) Exploit attributes ("Exploit available" set to "False") 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") Plugin Feed: 202311021421
Version 1.2 Nov 2, 2023, 4:31 AM IAVM reference STIG Severity (set to "I") Plugin Feed: 202311020431
Version 1.1 Oct 30, 2023, 4:49 PM CVSS metrics ("CVSSv3 score" changed from 7.5 to 9.8. "CVSSv3 vector" changed from "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H" to "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H") CVSSv3 score source (set to "CVE-2023-5731") Plugin Feed: 202310301649
Version 1.0 Oct 30, 2023, 10:06 AM New Plugin Feed: 202310301006
Version 1.0 Oct 30, 2023, 2:59 PM CVSS metrics ("CVSSv3 score" changed from 7.5 to 9.8) CVSS metrics ("CVSSv3 vector" changed from "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H" to "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H") CVSSv3 score source (set to "CVE-2023-5731") Plugin Feed: 202310301459