Scientific Linux Security Update : firefox on SL7.x i686/x86_64 (2021:5014)

high Nessus Plugin ID 155953


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-2021:5014-1 advisory.

- Mozilla: Memory safety bugs fixed in Firefox 95 and Firefox ESR 91.4 Mozilla: URL leakage when navigating while executing asynchronous function (CVE-2021-43536)

- Mozilla: Heap buffer overflow when using structured clone (CVE-2021-43537)

- Mozilla: Missing fullscreen and pointer lock notification when requesting both (CVE-2021-43538)

- Mozilla: GC rooting failure when calling wasm instance methods (CVE-2021-43539)

- Mozilla: External protocol handler parameters were unescaped (CVE-2021-43541)

- Mozilla: XMLHttpRequest error codes could have leaked the existence of an external protocol handler (CVE-2021-43542)

- Mozilla: Bypass of CSP sandbox directive when embedding (CVE-2021-43543)

- Mozilla: Denial of Service when using the Location API in a loop (CVE-2021-43545)

- Mozilla: Cursor spoofing could overlay user interface when native cursor is zoomed (CVE-2021-43546)

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: High

ID: 155953

File Name: sl_20211208_firefox_on_SL7_x.nasl

Version: 1.5

Type: local

Agent: unix

Published: 12/8/2021

Updated: 12/30/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


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-2021-43539


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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: p-cpe:/a:fermilab:scientific_linux:firefox, cpe:/o:fermilab:scientific_linux, 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: 12/8/2021

Vulnerability Publication Date: 12/7/2021

Reference Information

CVE: CVE-2021-43536, CVE-2021-43537, CVE-2021-43538, CVE-2021-43539, CVE-2021-43541, CVE-2021-43542, CVE-2021-43543, CVE-2021-43545, CVE-2021-43546

IAVA: 2021-A-0569-S

RHSA: RHSA-2021:5014