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MiracleLinux 8 : firefox-91.3.0-1.el8.ML.1 (AXSA:2021-2529:31)

critical Nessus Plugin ID 294180

Synopsis

The remote MiracleLinux host is missing one or more security updates.

Description

The remote MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2021-2529:31 advisory.

 * Mozilla: Use-after-free in HTTP2 Session object
 * Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3
 * Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (CVE-2021-38503)
 * Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)
 * Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning (CVE-2021-38506)
 * Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)
 * Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing (CVE-2021-38508)
 * Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain (CVE-2021-38509)

Tenable has extracted the preceding description block directly from the MiracleLinux 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

Update the affected firefox package.

See Also

https://tsn.miraclelinux.com/en/node/13711

Plugin Details

Severity: Critical

ID: 294180

File Name: miracle_linux_AXSA-2021-2529.nasl

Version: 1.1

Type: local

Published: 1/20/2026

Updated: 1/20/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2021-38503

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

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

Vulnerability Information

CPE: p-cpe:/a:miracle:linux:firefox, cpe:/o:miracle:linux:8

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/5/2021

Vulnerability Publication Date: 11/2/2021

Reference Information

CVE: CVE-2021-38503, CVE-2021-38504, CVE-2021-38506, CVE-2021-38507, CVE-2021-38508, CVE-2021-38509