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Debian dla-4335 : firefox-esr - security update

🗓️ 08 Dec 2025 00:00:00Reported by TenableType 
nessus
 nessus🔗 www.tenable.com👁 4 Views

Debian LTS advisory DLA-4335 fixes Firefox ESR CVEs in Debian 11; upgrade to the new ESR.

Related
Refs
Code
ReporterTitlePublishedViews
Family
FreeBSD		Mozilla -- Memory safety bugs
14 Oct 202500:00
–freebsd
FreeBSD		Mozilla -- Memory safety bugs
14 Oct 202500:00
–freebsd
FreeBSD		Mozilla -- XSS in sites without content-type header
14 Oct 202500:00
–freebsd
FreeBSD		Mozilla -- Use-after-free
14 Oct 202500:00
–freebsd
FreeBSD		Mozilla -- Out-of-bounds reads and writes
14 Oct 202500:00
–freebsd
FreeBSD		Mozilla -- Memory disclosure
14 Oct 202500:00
–freebsd
FreeBSD		Mozilla -- JavaScript Object property overriding
14 Oct 202500:00
–freebsd
ATTACKERKB		CVE-2025-11709
14 Oct 202512:27
–attackerkb
ATTACKERKB		CVE-2025-11710
14 Oct 202512:27
–attackerkb
ATTACKERKB		CVE-2025-11711
14 Oct 202512:27
–attackerkb
Rows per page
#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4335. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(277733);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/12/08");

  script_cve_id(
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    "CVE-2025-11709",
    "CVE-2025-11710",
    "CVE-2025-11711",
    "CVE-2025-11712",
    "CVE-2025-11714",
    "CVE-2025-11715"
  );

  script_name(english:"Debian dla-4335 : firefox-esr - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4335 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4335-1                [email protected]
    https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
    October 17, 2025                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : firefox-esr
    Version        : 140.4.0esr-1~deb11u1
    CVE ID         : CVE-2025-11708 CVE-2025-11709 CVE-2025-11710 CVE-2025-11711
                     CVE-2025-11712 CVE-2025-11714 CVE-2025-11715

    Multiple security issues have been found in the Mozilla Firefox web
    browser, which could potentially result in the execution of arbitrary
    code, memory disclosure or cross-site scripting.

    For Debian 11 bullseye, these problems have been fixed in version
    140.4.0esr-1~deb11u1.

    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 these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/firefox-esr");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11708");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11709");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11710");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11711");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11712");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11714");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11715");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/firefox-esr");
  script_set_attribute(attribute:"solution", value:
"Upgrade the firefox-esr packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-11715");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2025-11710");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/10/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/12/08");

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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gu-in");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hy-am");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ia");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ne-np");
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  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '11.0', 'prefix': 'firefox-esr', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ach', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-af', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-all', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-an', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ar', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ast', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-az', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-be', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-bg', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-bn', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-br', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-bs', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ca', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ca-valencia', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-cak', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-cs', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-cy', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-da', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-de', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-dsb', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-el', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-en-ca', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-en-gb', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-eo', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-es-ar', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-es-cl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-es-es', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-es-mx', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-et', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-eu', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-fa', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ff', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-fi', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-fr', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-fur', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-fy-nl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ga-ie', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-gd', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-gl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-gn', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-gu-in', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-he', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-hi-in', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-hr', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-hsb', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-hu', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-hy-am', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ia', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-id', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-is', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-it', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ja', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ka', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-kab', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-kk', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-km', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-kn', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ko', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-lij', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-lt', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-lv', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-mk', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-mr', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ms', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-my', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-nb-no', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ne-np', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-nl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-nn-no', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-oc', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-pa-in', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-pl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-pt-br', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-pt-pt', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-rm', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ro', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ru', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sat', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sc', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sco', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-si', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sk', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-skr', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-son', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sq', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sr', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-sv-se', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-szl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ta', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-te', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-tg', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-th', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-tl', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-tr', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-trs', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-uk', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-ur', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-uz', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-vi', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-xh', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-zh-cn', 'reference': '140.4.0esr-1~deb11u1'},
    {'release': '11.0', 'prefix': 'firefox-esr-l10n-zh-tw', 'reference': '140.4.0esr-1~deb11u1'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'firefox-esr / firefox-esr-l10n-ach / firefox-esr-l10n-af / etc');
}

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08 Dec 2025 00:00Current
7High risk
Vulners AI Score7
CVSS 3.19.8
EPSS0.00465
SSVC
debian lts advisoryfirefox security vulnerabilitiesversion 140.4 esr
4