Debian dla-4823 : 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-4823. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(363011);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/05");

  script_cve_id(
    "CVE-2026-35540",
    "CVE-2026-48843",
    "CVE-2026-62643",
    "CVE-2026-75006"
  );
  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-S");
  script_xref(name:"IAVA", value:"2026-A-0917");

  script_name(english:"Debian dla-4823 : 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 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4823 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4823-1                [email protected]
    https://www.debian.org/lts/security/                       Guilhem Moulin
    October 05, 2026                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : roundcube
    Version        : 1.6.5+dfsg-1+deb12u12
    CVE ID         : not yet available
    Debian Bug     : 1146838

    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, email header injection,
    or privilege escalation.

        Zach Hanley discovered that the CSS sanitizer was prone to declaration
        smuggling via un-encoded ampersand emission, which may lead to remote
        image blocking bypass or XSS.

        The CSS sanitizer is prone to property injection via body `background`
        attribute, which may lead to remote image blocking bypass or XSS.

        The sendmail logic is prone to email header injection via bare CR in the
        subject field, C-escape `\r` in the recipient display name, and/or
        identity's organization field.

        The attachment URL is prone to TNEF MIME tag injection, which may lead
        to zero-click stored XSS.

        Joshua Rogers discovered that the text/enriched part content in HTML
        editor was prone to XSS.

        Joshua Rogers discovered that the contact group membership actions
        add/remove were prone to cross-user access.

        The CSS sanitization fixes for CVE-2026-35540, CVE-2026-48843,
        CVE-2026-62643 and CVE-2026-75006 were insufficient, allowing a
        malicious embedded stylesheet in a text/html email to lead to SSRF or
        information disclosure.

        Wahab Khadir discovered that insufficient HTML/CSS sanitization may lead
        to remote image blocking bypass or XSS via CSS escapes in FuncIRI
        attributes.

        Insufficient HTML/CSS sanitization may lead to remote image blocking
        bypass or XSS via SVG SMIL src animation.

    For Debian 12 bookworm, this problem has been fixed in version
    1.6.5+dfsg-1+deb12u12.

    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-2026-62643");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-75006");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/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:N");
  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-2026-62643");

  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:"2026/10/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/05");

  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: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:"^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 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': '12.0', 'prefix': 'roundcube', 'reference': '1.6.5+dfsg-1+deb12u12'},
    {'release': '12.0', 'prefix': 'roundcube-core', 'reference': '1.6.5+dfsg-1+deb12u12'},
    {'release': '12.0', 'prefix': 'roundcube-mysql', 'reference': '1.6.5+dfsg-1+deb12u12'},
    {'release': '12.0', 'prefix': 'roundcube-pgsql', 'reference': '1.6.5+dfsg-1+deb12u12'},
    {'release': '12.0', 'prefix': 'roundcube-plugins', 'reference': '1.6.5+dfsg-1+deb12u12'},
    {'release': '12.0', 'prefix': 'roundcube-sqlite3', 'reference': '1.6.5+dfsg-1+deb12u12'}
];

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');
}