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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.

 - Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. 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 ESR < 78.14, Thunderbird < 78.14, and Firefox < 92. (CVE-2021-38493)

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: 1.4

Type: local

Agent: unix

Published: 9/10/2021

Updated: 1/20/2022

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