Debian dla-4693 : roundcube - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4693. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(328879);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/22");

  script_cve_id(
    "CVE-2026-35540",
    "CVE-2026-48843",
    "CVE-2026-54432",
    "CVE-2026-54433",
    "CVE-2026-62641",
    "CVE-2026-62642",
    "CVE-2026-62643",
    "CVE-2026-62644"
  );
  script_xref(name:"IAVA", value:"2026-A-0301-S");
  script_xref(name:"IAVA", value:"2026-A-0521");
  script_xref(name:"IAVA", value:"2026-A-0663");

  script_name(english:"Debian dla-4693 : roundcube - 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 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4693 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4693-1                [email protected]
    https://www.debian.org/lts/security/                       Guilhem Moulin
    July 22, 2026                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : roundcube
    Version        : 1.4.15+dfsg.1-1+deb11u10 1.6.5+dfsg-1+deb12u10
    CVE ID         : CVE-2026-54432 CVE-2026-54433 CVE-2026-62641 CVE-2026-62642
                     CVE-2026-62643 CVE-2026-62644
    Debian Bug     : 1138086 1141495

    Multiple vulnerabilities were discovered in Roundcube, a skinnable AJAX
    based webmail solution for IMAP servers, which could result in
    cross-site scripting, server-side request forgery, information
    disclosure, denial of service, or potentially account takeover.

    CVE-2026-54432

        Bohdan Kurinnoy discovered that attachment MIME types were neither
        sanitized nor escaped on the attachment-validation warning page,
        yielding a stored XSS vulnerability.

    CVE-2026-54433

        Bohdan Kurinnoy discovered that plain-text rendering was subject to
        a zero-click stored XSS vulnerability via crafted mailto: URIs.

    CVE-2026-62641

        It was discovered that the TNEF decoder was subject to Denial of
        Service via crafted compressed-RTF size in the winmail.dat
        attachment file.

    CVE-2026-62642

        An infinite loop was discovered in the TNEF decoder, which may lead
        to denial of service upon opening an email with a TNEF attachment.

    CVE-2026-62643

        It was discovered that the CSS sanitization fixes for CVE-2026-35540 and
        CVE-2026-48843 were insufficient, allowing a malicious embedded
        stylesheet in an HTML email to lead to SSRF or information
        disclosure.

    CVE-2026-62644

        It was discovered that the password plugin was subject to username
        spoofing via session data, which could potentially lead to account
        takeover.

    For Debian 11 bullseye, these problems have been fixed in version
    1.4.15+dfsg.1-1+deb11u10.

    For Debian 12 bookworm, these problems have been fixed in version
    1.6.5+dfsg-1+deb12u10.

    We recommend that you upgrade your roundcube packages.

    For the detailed security status of roundcube please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/roundcube

    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
    Attachment:
    signature.asc
    Description: PGP signature

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/roundcube");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-35540");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-48843");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-54432");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-54433");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62641");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62642");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62643");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62644");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/roundcube");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/roundcube");
  script_set_attribute(attribute:"solution", value:
"Upgrade the roundcube 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:C/C:H/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-62644");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-62643");

  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:"2026/03/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:roundcube");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:roundcube-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:roundcube-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:roundcube-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:roundcube-plugins");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:roundcube-sqlite3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  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:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2026 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]+|^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0 / 12.0', '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': 'roundcube', 'reference': '1.4.15+dfsg.1-1+deb11u10'},
    {'release': '11.0', 'prefix': 'roundcube-core', 'reference': '1.4.15+dfsg.1-1+deb11u10'},
    {'release': '11.0', 'prefix': 'roundcube-mysql', 'reference': '1.4.15+dfsg.1-1+deb11u10'},
    {'release': '11.0', 'prefix': 'roundcube-pgsql', 'reference': '1.4.15+dfsg.1-1+deb11u10'},
    {'release': '11.0', 'prefix': 'roundcube-plugins', 'reference': '1.4.15+dfsg.1-1+deb11u10'},
    {'release': '11.0', 'prefix': 'roundcube-sqlite3', 'reference': '1.4.15+dfsg.1-1+deb11u10'},
    {'release': '12.0', 'prefix': 'roundcube', 'reference': '1.6.5+dfsg-1+deb12u10'},
    {'release': '12.0', 'prefix': 'roundcube-core', 'reference': '1.6.5+dfsg-1+deb12u10'},
    {'release': '12.0', 'prefix': 'roundcube-mysql', 'reference': '1.6.5+dfsg-1+deb12u10'},
    {'release': '12.0', 'prefix': 'roundcube-pgsql', 'reference': '1.6.5+dfsg-1+deb12u10'},
    {'release': '12.0', 'prefix': 'roundcube-plugins', 'reference': '1.6.5+dfsg-1+deb12u10'},
    {'release': '12.0', 'prefix': 'roundcube-sqlite3', 'reference': '1.6.5+dfsg-1+deb12u10'}
];

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, 'roundcube / roundcube-core / roundcube-mysql / roundcube-pgsql / etc');
}