Scientific Linux Security Update : firefox on SL7.x i686/x86_64 (2021:3791)

critical Nessus Plugin ID 154202


The remote Scientific Linux host is missing one or more security updates.


The remote Scientific Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the SLSA-2021:3791-1 advisory.

- Mozilla: Use-after-free in MessageTask (CVE-2021-38496)

- Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500)

- Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501)

- rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810)

- Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497)

- Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498)

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


Update the affected firefox and / or firefox-debuginfo packages.

See Also

Plugin Details

Severity: Critical

ID: 154202

File Name: sl_20211012_firefox_on_SL7_x.nasl

Version: 1.8

Type: local

Agent: unix

Published: 10/18/2021

Updated: 5/9/2022

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-38501


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS Score Source: CVE-2021-32810

Vulnerability Information

CPE: cpe:/o:fermilab:scientific_linux, p-cpe:/a:fermilab:scientific_linux:firefox, p-cpe:/a:fermilab:scientific_linux:firefox-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/12/2021

Vulnerability Publication Date: 8/2/2021

Reference Information

CVE: CVE-2021-32810, CVE-2021-38496, CVE-2021-38497, CVE-2021-38498, CVE-2021-38500, CVE-2021-38501

IAVA: 2021-A-0450-S, 2021-A-0461-S

RHSA: RHSA-2021:3791