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 140.3.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2FIREFOX-2025-043 advisory.
Sandbox escape due to use-after-free in the Graphics: Canvas2D component.
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
(CVE-2025-10527)
Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component.
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
(CVE-2025-10528)
Same-origin policy bypass in the Layout component.
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
(CVE-2025-10529)
Incorrect boundary conditions in the JavaScript: GC component.
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
(CVE-2025-10532)
Integer overflow in the SVG component.
This vulnerability affects Firefox < 143, Firefox ESR < 115.28, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. (CVE-2025-10533)
Information disclosure in the Networking: Cache component.
This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
(CVE-2025-10536)
Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142.
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 < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. (CVE-2025-10537)
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. (CVE-2025-59375)
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-2025-043' to update your system.
Plugin Details
File Name: al2_ALASFIREFOX-2025-043.nasl
Agent: unix
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus
Risk Information
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
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 Ease: No known exploits are available
Patch Publication Date: 9/29/2025
Vulnerability Publication Date: 9/15/2025