Ubuntu 20.04 LTS : Thunderbird vulnerabilities (USN-4995-1)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4995-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
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  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2021-23961",
    "CVE-2021-23981",
    "CVE-2021-23982",
    "CVE-2021-23984",
    "CVE-2021-23987",
    "CVE-2021-23991",
    "CVE-2021-23992",
    "CVE-2021-23993",
    "CVE-2021-23994",
    "CVE-2021-23995",
    "CVE-2021-23998",
    "CVE-2021-23999",
    "CVE-2021-24002",
    "CVE-2021-29945",
    "CVE-2021-29946",
    "CVE-2021-29948",
    "CVE-2021-29949",
    "CVE-2021-29956",
    "CVE-2021-29957",
    "CVE-2021-29967"
  );
  script_xref(name:"USN", value:"4995-1");
  script_xref(name:"IAVA", value:"2021-A-0051-S");
  script_xref(name:"IAVA", value:"2021-A-0185-S");
  script_xref(name:"IAVA", value:"2021-A-0144-S");
  script_xref(name:"IAVA", value:"2021-A-0163-S");
  script_xref(name:"IAVA", value:"2021-A-0246-S");
  script_xref(name:"IAVA", value:"2021-A-0264-S");

  script_name(english:"Ubuntu 20.04 LTS : Thunderbird vulnerabilities (USN-4995-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-4995-1 advisory.

    Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially
    crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of
    service, obtain sensitive information, spoof the UI, bypass security restrictions, or execute arbitrary
    code. (CVE-2021-23961, CVE-2021-23981, CVE-2021-23982, CVE-2021-23987, CVE-2021-23994, CVE-2021-23998,
    CVE-2021-23999, CVE-2021-29945, CVE-2021-29946, CVE-2021-29967)

    It was discovered that extensions could open popup windows with control of the window title in some
    circumstances. If a user were tricked into installing a specially crafted extension, an attacker could
    potentially exploit this to spoof a website and trick the user into providing credentials.
    (CVE-2021-23984)

    Multiple security issues were discovered in Thunderbird's OpenPGP integration. If a user were tricked into
    importing a specially crafted key in some circumstances, an attacker could potentially exploit this to
    cause a denial of service (inability to send encrypted email) or confuse the user. (CVE-2021-23991,
    CVE-2021-23992, CVE-2021-23993)

    A use-after-free was discovered when Responsive Design Mode was enabled. If a user were tricked into
    opening a specially crafted website with Responsive Design Mode enabled, an attacker could potentially
    exploit this to cause a denial of service, or execute arbitrary code. (CVE-2021-23995)

    It was discovered that Thunderbird mishandled ftp URLs with encoded newline characters. If a user were
    tricked into clicking on a specially crafted link, an attacker could potentially exploit this to send
    arbitrary FTP commands. (CVE-2021-24002)

    It was discovered that Thunderbird wrote signatures to disk and read them back during verification. A
    local attacker could potentially exploit this to replace the data with another signature file.
    (CVE-2021-29948)

    It was discovered that Thunderbird might load an alternative OTR library. If a user were tricked into
    copying a specially crafted library to one of Thunderbird's search paths, an attacker could potentially
    exploit this to execute arbitrary code. (CVE-2021-29949)

    It was discovered that secret keys imported into Thunderbird were stored unencrypted. A local attacker
    could potentially exploit this to obtain private keys. (CVE-2021-29956)

    It was discovered that Thunderbird did not indicate when an inline signed or encrypted message contained
    additional unprotected parts. (CVE-2021-29957)

Tenable has extracted the preceding description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-4995-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-29967");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/01/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/06/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/22");

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

  script_copyright(english:"Ubuntu Security Notice (C) 2021-2024 Canonical, Inc. / NASL script (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
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include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '20.04', 'pkgname': 'thunderbird', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-dev', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-gnome-support', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-af', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ar', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ast', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-be', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-bg', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-bn', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-bn-bd', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-br', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ca', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-cak', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-cs', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-cy', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-da', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-de', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-dsb', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-el', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-en', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-en-gb', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-en-us', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-es', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-es-ar', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-es-es', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-et', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
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    {'osver': '20.04', 'pkgname': 'thunderbird-locale-fi', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-fr', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-fy', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
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    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ga', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ga-ie', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-gd', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-gl', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-he', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-hr', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-hsb', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-hu', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-hy', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-id', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-is', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-it', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ja', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ka', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-kab', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-kk', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ko', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-lt', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-mk', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ms', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-nb', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-nb-no', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-nl', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-nn', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-nn-no', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-pa', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-pa-in', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-pl', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-pt', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-pt-br', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-pt-pt', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-rm', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ro', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ru', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-si', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-sk', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-sl', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-sq', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-sr', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-sv', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-sv-se', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ta', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-ta-lk', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-th', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-tr', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-uk', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-uz', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-vi', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-zh-cn', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-zh-hans', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-zh-hant', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-locale-zh-tw', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'thunderbird-mozsymbols', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'xul-ext-calendar-timezones', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'xul-ext-gdata-provider', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'},
    {'osver': '20.04', 'pkgname': 'xul-ext-lightning', 'pkgver': '1:78.11.0+build1-0ubuntu0.20.04.2'}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'thunderbird / thunderbird-dev / thunderbird-gnome-support / etc');
}