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Debian DLA-2756-1 : firefox-esr - LTS security update

high Nessus Plugin ID 153216

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2756 advisory.

 Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code. For Debian 9 stretch, this problem has been fixed in version 78.14.0esr-1~deb9u1. We recommend that you upgrade your firefox-esr packages. For the detailed security status of firefox-esr please refer to its security tracker page at: https://security- tracker.debian.org/tracker/firefox-esr Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at:
 https://wiki.debian.org/LTS

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

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

Solution

Upgrade the firefox-esr packages.

For Debian 9 stretch, this problem has been fixed in version 78.14.0esr-1~deb9u1.

See Also

https://security-tracker.debian.org/tracker/source-package/firefox-esr

https://www.debian.org/lts/security/2021/dla-2756

https://security-tracker.debian.org/tracker/CVE-2021-38493

https://packages.debian.org/source/stretch/firefox-esr

Plugin Details

Severity: High

ID: 153216

File Name: debian_DLA-2756.nasl

Version: 1.5

Type: local

Agent: unix

Published: 9/10/2021

Updated: 1/24/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

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-2021-38493

CVSS v3

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:debian:debian_linux:firefox-esr-l10n-de, p-cpe:/a:debian:debian_linux:iceweasel-l10n-uz, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-son, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sq, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ca, p-cpe:/a:debian:debian_linux:iceweasel-l10n-fa, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ml, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-pl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-pa-in, p-cpe:/a:debian:debian_linux:iceweasel-l10n-si, p-cpe:/a:debian:debian_linux:iceweasel-l10n-en-gb, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-te, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-or, p-cpe:/a:debian:debian_linux:iceweasel-l10n-kn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ca, p-cpe:/a:debian:debian_linux:iceweasel-l10n-el, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-is, p-cpe:/a:debian:debian_linux:iceweasel-l10n-da, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hu, p-cpe:/a:debian:debian_linux:iceweasel-l10n-km, p-cpe:/a:debian:debian_linux:firefox-esr-dev, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-tr, p-cpe:/a:debian:debian_linux:iceweasel-l10n-cs, p-cpe:/a:debian:debian_linux:iceweasel-l10n-tr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bg, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hy-am, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ml, p-cpe:/a:debian:debian_linux:iceweasel-l10n-he, p-cpe:/a:debian:debian_linux:iceweasel-l10n-tl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-mx, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-si, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cs, p-cpe:/a:debian:debian_linux:iceweasel-l10n-es-es, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-eo, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fa, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-be, p-cpe:/a:debian:debian_linux:iceweasel-l10n-lt, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-zh-tw, p-cpe:/a:debian:debian_linux:iceweasel-l10n-or, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mai, p-cpe:/a:debian:debian_linux:iceweasel-l10n-trs, p-cpe:/a:debian:debian_linux:iceweasel-l10n-br, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ta, p-cpe:/a:debian:debian_linux:iceweasel-l10n-it, p-cpe:/a:debian:debian_linux:iceweasel-l10n-nl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ar, p-cpe:/a:debian:debian_linux:iceweasel-l10n-pt-br, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pt-br, p-cpe:/a:debian:debian_linux:iceweasel-l10n-az, p-cpe:/a:debian:debian_linux:iceweasel-l10n-kk, p-cpe:/a:debian:debian_linux:iceweasel-l10n-rm, p-cpe:/a:debian:debian_linux:iceweasel-l10n-gn, p-cpe:/a:debian:debian_linux:iceweasel-l10n-fy-nl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-nb-no, p-cpe:/a:debian:debian_linux:iceweasel-l10n-id, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ne-np, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ar, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pa-in, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ro, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-trs, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ro, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ia, p-cpe:/a:debian:debian_linux:iceweasel-l10n-xh, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-my, p-cpe:/a:debian:debian_linux:iceweasel-l10n-bn, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-as, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nb-no, p-cpe:/a:debian:debian_linux:iceweasel-l10n-lv, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-eu, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ast, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fr, p-cpe:/a:debian:debian_linux:iceweasel-l10n-kab, p-cpe:/a:debian:debian_linux:iceweasel-l10n-pt-pt, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-dsb, p-cpe:/a:debian:debian_linux:iceweasel-l10n-bn-bd, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ga-ie, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-km, p-cpe:/a:debian:debian_linux:iceweasel-l10n-hu, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ca-valencia, p-cpe:/a:debian:debian_linux:iceweasel-l10n-mk, p-cpe:/a:debian:debian_linux:iceweasel-l10n-all, p-cpe:/a:debian:debian_linux:iceweasel-l10n-sr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ja, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ne-np, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-xh, p-cpe:/a:debian:debian_linux:iceweasel-l10n-de, p-cpe:/a:debian:debian_linux:iceweasel-l10n-fi, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ka, p-cpe:/a:debian:debian_linux:iceweasel-l10n-mr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-az, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-za, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-oc, p-cpe:/a:debian:debian_linux:iceweasel-l10n-zh-tw, p-cpe:/a:debian:debian_linux:iceweasel-l10n-vi, p-cpe:/a:debian:debian_linux:iceweasel-l10n-eo, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cy, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-gb, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ca-valencia, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gn, p-cpe:/a:debian:debian_linux:iceweasel-l10n-oc, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-uz, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lij, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-br, p-cpe:/a:debian:debian_linux:iceweasel-dev, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-it, p-cpe:/a:debian:debian_linux:iceweasel-l10n-bn-in, p-cpe:/a:debian:debian_linux:iceweasel-l10n-as, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ff, p-cpe:/a:debian:debian_linux:iceweasel-l10n-cy, p-cpe:/a:debian:debian_linux:iceweasel-l10n-gl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-my, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ur, p-cpe:/a:debian:debian_linux:iceweasel-l10n-en-ca, p-cpe:/a:debian:debian_linux:iceweasel-l10n-et, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fy-nl, p-cpe:/a:debian:debian_linux:firefox-esr, p-cpe:/a:debian:debian_linux:iceweasel-l10n-fr, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ur, p-cpe:/a:debian:debian_linux:iceweasel-l10n-mai, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ach, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-da, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-tl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-dsb, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ast, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-ar, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-el, p-cpe:/a:debian:debian_linux:iceweasel-l10n-bs, p-cpe:/a:debian:debian_linux:iceweasel-l10n-hi-in, p-cpe:/a:debian:debian_linux:iceweasel-l10n-son, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bn-in, p-cpe:/a:debian:debian_linux:iceweasel-l10n-be, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hsb, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ka, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bs, p-cpe:/a:debian:debian_linux:iceweasel-l10n-sv-se, p-cpe:/a:debian:debian_linux:iceweasel-l10n-es-mx, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ru, p-cpe:/a:debian:debian_linux:iceweasel-l10n-sq, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sv-se, p-cpe:/a:debian:debian_linux:iceweasel-l10n-gu-in, p-cpe:/a:debian:debian_linux:iceweasel-l10n-af, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ms, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pt-pt, p-cpe:/a:debian:debian_linux:iceweasel-l10n-sk, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sk, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ja, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bn-bd, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-th, p-cpe:/a:debian:debian_linux:iceweasel-l10n-bg, p-cpe:/a:debian:debian_linux:iceweasel-l10n-es-cl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gu-in, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-zh-cn, p-cpe:/a:debian:debian_linux:iceweasel-l10n-en-za, p-cpe:/a:debian:debian_linux:iceweasel-l10n-lij, p-cpe:/a:debian:debian_linux:iceweasel-l10n-gd, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-he, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-vi, p-cpe:/a:debian:debian_linux:iceweasel-l10n-te, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-is, p-cpe:/a:debian:debian_linux:iceweasel-l10n-th, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kab, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kk, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ko, p-cpe:/a:debian:debian_linux:iceweasel-l10n-hy-am, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-ca, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-rm, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hi-in, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nn-no, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-sr, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ach, p-cpe:/a:debian:debian_linux:iceweasel-l10n-an, p-cpe:/a:debian:debian_linux:iceweasel-l10n-es-ar, p-cpe:/a:debian:debian_linux:iceweasel-l10n-sl, p-cpe:/a:debian:debian_linux:iceweasel-l10n-zh-cn, p-cpe:/a:debian:debian_linux:iceweasel-l10n-nn-no, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-uk, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mk, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-et, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lv, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-all, p-cpe:/a:debian:debian_linux:iceweasel-l10n-uk, p-cpe:/a:debian:debian_linux:iceweasel, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ff, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-an, p-cpe:/a:debian:debian_linux:iceweasel-l10n-hsb, p-cpe:/a:debian:debian_linux:iceweasel-l10n-hr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-af, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ms, p-cpe:/a:debian:debian_linux:iceweasel-l10n-ru, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gd, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hr, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-es, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ia, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lt, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-cl, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cak, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ga-ie, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fi, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ko, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ta, p-cpe:/a:debian:debian_linux:iceweasel-l10n-cak, p-cpe:/a:debian:debian_linux:iceweasel-l10n-eu, p-cpe:/a:debian:debian_linux:firefox-esr-l10n-id

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 9/10/2021

Vulnerability Publication Date: 9/7/2021

Reference Information

CVE: CVE-2021-38493

IAVA: 2021-A-0405