Amazon Linux 2 : firefox (ALASFIREFOX-2026-067)

critical Nessus Plugin ID 371796

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of firefox installed on the remote host is prior to 153.5.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2FIREFOX-2026-067 advisory.

Information disclosure in the Networking: JAR component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100766)

Sandbox escape in the XUL component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
(CVE-2026-100787)

Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109704)

Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109705)

Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109706)

Sandbox escape due to use-after-free in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109707)

Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109708)

Information disclosure, privilege escalation in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109709)

Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109710)

Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109711)

Sandbox escape due to uninitialized memory in the Graphics component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109712)

Use-after-free in the Crash Reporting component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109713)

Incorrect boundary conditions in the JavaScript Engine component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109715)

Incorrect boundary conditions in the JavaScript Engine component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109716)

Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109717)

Use-after-free in the XML component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109718)

Race condition, use-after-free in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109719)

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109720)

Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109721)

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109722)

Integer overflow in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109723)

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109724)

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109725)

Use-after-free in the SVG component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109726)

Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109727)

Use-after-free in the DOM: Animation component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109728)

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109729)

Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109730)

Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109731)

Use-after-free in the DOM: Streams component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109732)

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109733)

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109734)

Frame poisoning in the Layout component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109736)

Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109737)

Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109738)

Use-after-free in the Storage: Bucket File System component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109741)

Information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109742)

Privilege escalation in the Panning and Zooming component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109743)

Other issue in the DOM: File component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
(CVE-2026-109744)

Sandbox escape due to uninitialized memory in the DOM: Web Serial component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109745)

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109751)

Use-after-free in the DOM: Workers component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109752)

Incorrect boundary conditions in the Layout component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109753)

Incorrect boundary conditions in the DOM: Editor component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109754)

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109756)

Sandbox escape due to race condition in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109757)

Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109759)

Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109760)

Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109762)

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109763)

Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109764)

Race condition, use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109765)

Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109766)

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109767)

Spoofing issue in the DOM: Web Serial component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109770)

Denial-of-service in the WebRTC component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109775)

Race condition in the XPCOM component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
(CVE-2026-109776)

Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109777)

Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109778)

Denial-of-service in the Printing: Output component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109781)

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5.
(CVE-2026-109782)

Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5.
(CVE-2026-109783)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

Solution

Run 'yum update firefox' or or 'yum update --advisory ALAS2FIREFOX-2026-067' to update your system.

Plugin Details

Severity: Critical

ID: 371796

File Name: al2_ALASFIREFOX-2026-067.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 10/24/2026

Updated: 10/24/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.17

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-109778

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Temporal Score: 8.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-109745

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:firefox

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/24/2026

Vulnerability Publication Date: 9/29/2026

Reference Information

CVE: CVE-2026-100766, CVE-2026-100787, CVE-2026-109704, CVE-2026-109705, CVE-2026-109706, CVE-2026-109707, CVE-2026-109708, CVE-2026-109709, CVE-2026-109710, CVE-2026-109711, CVE-2026-109712, CVE-2026-109713, CVE-2026-109715, CVE-2026-109716, CVE-2026-109717, CVE-2026-109718, CVE-2026-109719, CVE-2026-109720, CVE-2026-109721, CVE-2026-109722, CVE-2026-109723, CVE-2026-109724, CVE-2026-109725, CVE-2026-109726, CVE-2026-109727, CVE-2026-109728, CVE-2026-109729, CVE-2026-109730, CVE-2026-109731, CVE-2026-109732, CVE-2026-109733, CVE-2026-109734, CVE-2026-109736, CVE-2026-109737, CVE-2026-109738, CVE-2026-109741, CVE-2026-109742, CVE-2026-109743, CVE-2026-109744, CVE-2026-109745, CVE-2026-109751, CVE-2026-109752, CVE-2026-109753, CVE-2026-109754, CVE-2026-109756, CVE-2026-109757, CVE-2026-109759, CVE-2026-109760, CVE-2026-109762, CVE-2026-109763, CVE-2026-109764, CVE-2026-109765, CVE-2026-109766, CVE-2026-109767, CVE-2026-109770, CVE-2026-109775, CVE-2026-109776, CVE-2026-109777, CVE-2026-109778, CVE-2026-109781, CVE-2026-109782, CVE-2026-109783

IAVA: 2026-A-1136

Detections

Analytics