Debian dla-4864 : libswupdate-dev - 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-4864. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(372214);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/27");

  script_cve_id("CVE-2025-41259", "CVE-2026-109399");

  script_name(english:"Debian dla-4864 : libswupdate-dev - 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-4864 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4864-1                [email protected]
    https://www.debian.org/lts/security/          Carlos Henrique Lima Melara
    October 26, 2026                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : swupdate
    Version        : 2022.12+dfsg-4+deb12u3
    CVE ID         : CVE-2025-41259 CVE-2026-109399

    Two vulnerabilities were discovered in swupdate, a software update framework
    for embedded systems, which could result in privilege escalation or a signature
    validation bypass.

    For Debian 12 bookworm, these problems have been fixed in version
    2022.12+dfsg-4+deb12u3.

    We recommend that you upgrade your swupdate packages.

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

    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/swupdate");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-41259");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-109399");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/swupdate");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libswupdate-dev packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:H/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:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-109399");

  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:"2026/06/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswupdate-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswupdate0.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lua-swupdate");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:swupdate");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:swupdate-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:swupdate-www");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  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) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.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': 'libswupdate-dev', 'reference': '2022.12+dfsg-4+deb12u3'},
    {'release': '12.0', 'prefix': 'libswupdate0.1', 'reference': '2022.12+dfsg-4+deb12u3'},
    {'release': '12.0', 'prefix': 'lua-swupdate', 'reference': '2022.12+dfsg-4+deb12u3'},
    {'release': '12.0', 'prefix': 'swupdate', 'reference': '2022.12+dfsg-4+deb12u3'},
    {'release': '12.0', 'prefix': 'swupdate-doc', 'reference': '2022.12+dfsg-4+deb12u3'},
    {'release': '12.0', 'prefix': 'swupdate-www', 'reference': '2022.12+dfsg-4+deb12u3'}
];

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, 'libswupdate-dev / libswupdate0.1 / lua-swupdate / swupdate / etc');
}