Ubuntu 26.04 LTS : MariaDB vulnerabilities (USN-8536-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8536-1. 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(327096);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/15");

  script_cve_id(
    "CVE-2026-44168",
    "CVE-2026-44169",
    "CVE-2026-44171",
    "CVE-2026-44172",
    "CVE-2026-44173",
    "CVE-2026-48163",
    "CVE-2026-48165",
    "CVE-2026-49261"
  );
  script_xref(name:"USN", value:"8536-1");

  script_name(english:"Ubuntu 26.04 LTS : MariaDB vulnerabilities (USN-8536-1)");

  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 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in
the USN-8536-1 advisory.

    It was discovered that MariaDB did not properly validate parameters supplied by a joiner node during a
    State Snapshot Transfer using the mariabackup method. An attacker could possibly use this issue to execute
    arbitrary shell commands on the donor node. (CVE-2026-44168)

    It was discovered that MariaDB did not properly enforce the SHOW CREATE ROUTINE privilege when a user
    obtained access to a stored routine via a role. An authenticated user could possibly use this issue to
    obtain sensitive information. (CVE-2026-44169)

    It was discovered that MariaDB's mbstream utility did not properly validate paths when unpacking archives.
    An attacker could possibly use this issue to write files outside of the intended target directory.
    (CVE-2026-44171)

    It was discovered that MariaDB's mysql_real_escape_string() function incorrectly handled the big5
    character set. An attacker could possibly use this issue to perform SQL injection attacks.
    (CVE-2026-44172)

    It was discovered that MariaDB did not properly check the FILE privilege when the FROM clause of a SELECT
    ... INTO OUTFILE or SELECT ... INTO DUMPFILE statement contained only subqueries. An authenticated user
    could possibly use this issue to write files to unintended locations. (CVE-2026-44173)

    It was discovered that MariaDB did not properly validate parameters supplied by a joiner node during a
    State Snapshot Transfer using the rsync method. An attacker could possibly use this issue to execute
    arbitrary shell commands on the donor node. (CVE-2026-48163)

    It was discovered that MariaDB allowed a high-privileged user to set certain Galera system variables to
    values containing shell commands, which were then executed by the server process. An authenticated user
    could possibly use this issue to execute arbitrary shell commands. (CVE-2026-48165)

    It was discovered that MariaDB executed shell commands embedded in the name of a joiner node when
    wsrep_notify_cmd was enabled. A remote attacker could possibly use this issue to execute arbitrary shell
    commands. (CVE-2026-49261)

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-8536-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected 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: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:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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-2026-49261");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-44172");

  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:"2026/05/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmariadb-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmariadb-dev-compat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmariadb3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmariadbd-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libmariadbd19t64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-backup");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-client-compat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-client-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-connect");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-connect-jdbc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-cracklib-password-check");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-gssapi-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-gssapi-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-hashicorp-key-management");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-mroonga");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-oqgraph");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-provider-bzip2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-provider-lz4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-provider-lzma");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-provider-lzo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-provider-snappy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-rocksdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-s3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-plugin-spider");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-server-compat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-server-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:mariadb-test-data");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  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");
  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 (! ('26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 26.04', '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 pkgs = [
    {'osver': '26.04', 'pkgname': 'libmariadb-dev', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'libmariadb-dev-compat', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'libmariadb3', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'libmariadbd-dev', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'libmariadbd19t64', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-backup', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-client', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-client-compat', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-client-core', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-common', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-connect', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-connect-jdbc', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-cracklib-password-check', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-gssapi-client', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-gssapi-server', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-hashicorp-key-management', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-mroonga', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-oqgraph', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-provider-bzip2', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-provider-lz4', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-provider-lzma', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-provider-lzo', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-provider-snappy', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-rocksdb', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-s3', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-plugin-spider', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-server', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-server-compat', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-server-core', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-test', 'pkgver': '1:11.8.6-5ubuntu0.1'},
    {'osver': '26.04', 'pkgname': 'mariadb-test-data', 'pkgver': '1:11.8.6-5ubuntu0.1'}
];

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'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, 'libmariadb-dev / libmariadb-dev-compat / libmariadb3 / etc');
}