Debian dsa-6170 : golang-github-snapcore-snapd-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 dsa-6170. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(303079);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/19");

  script_cve_id("CVE-2026-3888");

  script_name(english:"Debian dsa-6170 : golang-github-snapcore-snapd-dev - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6170
advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6170-1                   [email protected]
    https://www.debian.org/security/                     Salvatore Bonaccorso
    March 19, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : snapd
    CVE ID         : CVE-2026-3888
    Debian Bug     : 1131120

    The Qualys Threat Research Unit (TRU) discovered a local privilege
    escalation vulnerability in snapd, a daemon and tooling that enable snap
    packages. Details can be found in the Qualys advisory at
    https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt

    For the oldstable distribution (bookworm), this problem has been fixed
    in version 2.57.6-1+deb12u1.

    For the stable distribution (trixie), this problem has been fixed in
    version 2.68.3-3+deb13u1.

    We recommend that you upgrade your snapd packages.

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

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/

    Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue 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/snapd");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-3888");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/snapd");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/snapd");
  script_set_attribute(attribute:"solution", value:
"Upgrade the golang-github-snapcore-snapd-dev packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/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-2026-3888");

  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:"2026/03/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:golang-github-snapcore-snapd-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:snap-confine");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:snapd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ubuntu-core-launcher");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  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_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]+|^(13)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0 / 13.0', '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': 'golang-github-snapcore-snapd-dev', 'reference': '2.57.6-1+deb12u1'},
    {'release': '12.0', 'prefix': 'snap-confine', 'reference': '2.57.6-1+deb12u1'},
    {'release': '12.0', 'prefix': 'snapd', 'reference': '2.57.6-1+deb12u1'},
    {'release': '12.0', 'prefix': 'ubuntu-core-launcher', 'reference': '2.57.6-1+deb12u1'},
    {'release': '13.0', 'prefix': 'golang-github-snapcore-snapd-dev', 'reference': '2.68.3-3+deb13u1'},
    {'release': '13.0', 'prefix': 'snap-confine', 'reference': '2.68.3-3+deb13u1'},
    {'release': '13.0', 'prefix': 'snapd', 'reference': '2.68.3-3+deb13u1'},
    {'release': '13.0', 'prefix': 'ubuntu-core-launcher', 'reference': '2.68.3-3+deb13u1'}
];

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_WARNING,
    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, 'golang-github-snapcore-snapd-dev / snap-confine / snapd / etc');
}