Ubuntu 16.04 LTS / 18.04 LTS : Roundcube Webmail vulnerabilities (USN-8132-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8132-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(304432);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id(
    "CVE-2016-4068",
    "CVE-2016-4069",
    "CVE-2016-9920",
    "CVE-2017-6820",
    "CVE-2017-8114",
    "CVE-2018-9846",
    "CVE-2018-19205",
    "CVE-2018-19206",
    "CVE-2018-1000071",
    "CVE-2019-10740"
  );
  script_xref(name:"USN", value:"8132-1");
  script_xref(name:"IAVA", value:"2026-A-0159-S");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS : Roundcube Webmail vulnerabilities (USN-8132-1)");

  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 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-8132-1 advisory.

    It was discovered that Roundcube Webmail did not properly sanitize

    certain HTML elements within the e-mail body. An attacker could possibly

    use this issue to cause a cross-site scripting attack. This issue was only

    addressed in Ubuntu 16.04 LTS. (CVE-2016-4068, CVE-2016-4069)

    It was discovered that Roundcube Webmail did not properly handle certain

    configuration parameters. An attacker could possibly use this issue to

    execute arbitrary code. This issue was only addressed in Ubuntu 16.04 LTS.

    (CVE-2016-9920)

    It was discovered that Roundcube Webmail did not properly sanitize CSS styles

    within SVG documents. An attacker could possibly use this issue to cause

    a cross-site scripting attack. This issue was only addressed in Ubuntu 16.04 LTS. (CVE-2017-6820)

    It was discovered that Roundcube Webmail did not properly restrict exec call in

    certain drivers of the password plugin. An authenticated user could possibly

    use this issue to perform arbitrary password resets. This issue was only addressed in

    Ubuntu 16.04 LTS. (CVE-2017-8114)

    It was discovered that Roundcube Webmail did not properly set file permissions within

    the Enigma plugin. An attacker could possibly use this issue to exfiltrate GPG private

    keys via network connectivity. (CVE-2018-1000071)

    It was discovered that Roundcube Webmail did not properly handle GnuPG MDC

    integrity-protection warnings. An attacker could possibly use this issue to obtain

    sensitive information from encrypted communications. (CVE-2018-19205)

    It was discovered that Roundcube Webmail did not properly sanitize <svg> and <style> tags within HTML
    attachments. An attacker could possibly use this issue to cause a

    cross-site scripting attack. (CVE-2018-19206)

    It was discovered that Roundcube Webmail did not properly handle partially encrypted multipart messages.
    An attacker could possibly use this issue to cause

    leaking of the plaintext of encrypted messages via an email reply. (CVE-2019-10740)

    It was discovered that Roundcube Webmail did not properly sanitize a certain parameter

    within the archive plugin. An attacker could possibly use this issue to perform an

    IMAP injection attack. This issue was only addressed in Ubuntu 16.04 LTS. (CVE-2018-9846)

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-8132-1");
  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-2018-9846");

  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:"2016/04/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:roundcube");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:roundcube-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:roundcube-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:roundcube-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:roundcube-plugins");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:roundcube-sqlite3");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04', '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 ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '16.04', 'pkgname': 'roundcube', 'pkgver': '1.2~beta+dfsg.1-0ubuntu1+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'roundcube-core', 'pkgver': '1.2~beta+dfsg.1-0ubuntu1+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'roundcube-mysql', 'pkgver': '1.2~beta+dfsg.1-0ubuntu1+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'roundcube-pgsql', 'pkgver': '1.2~beta+dfsg.1-0ubuntu1+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'roundcube-plugins', 'pkgver': '1.2~beta+dfsg.1-0ubuntu1+esm7', 'ubuntu_pro': TRUE},
    {'osver': '16.04', 'pkgname': 'roundcube-sqlite3', 'pkgver': '1.2~beta+dfsg.1-0ubuntu1+esm7', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'roundcube', 'pkgver': '1.3.6+dfsg.1-1ubuntu0.1~esm7', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'roundcube-core', 'pkgver': '1.3.6+dfsg.1-1ubuntu0.1~esm7', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'roundcube-mysql', 'pkgver': '1.3.6+dfsg.1-1ubuntu0.1~esm7', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'roundcube-pgsql', 'pkgver': '1.3.6+dfsg.1-1ubuntu0.1~esm7', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'roundcube-plugins', 'pkgver': '1.3.6+dfsg.1-1ubuntu0.1~esm7', 'ubuntu_pro': TRUE},
    {'osver': '18.04', 'pkgname': 'roundcube-sqlite3', 'pkgver': '1.3.6+dfsg.1-1ubuntu0.1~esm7', 'ubuntu_pro': TRUE}
];

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 (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) {
        flag++;
        if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
    }
  }
}

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  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, 'roundcube / roundcube-core / roundcube-mysql / roundcube-pgsql / etc');
}