Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : Django vulnerabilities (USN-8154-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8154-1. 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(306095);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/13");

  script_cve_id(
    "CVE-2026-3902",
    "CVE-2026-4277",
    "CVE-2026-4292",
    "CVE-2026-33033",
    "CVE-2026-33034"
  );
  script_xref(name:"USN", value:"8154-1");

  script_name(english:"Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 : Django vulnerabilities (USN-8154-1)");

  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 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-8154-1 advisory.

    Seokchan Yoon discovered that Django incorrectly handled copying memory when parsing multipart uploads
    with excessive whitespace. A remote attacker could possibly use this issue to cause Django to use
    excessive resources, leading to a denial of service. (CVE-2026-33033)

    It was discovered that Django did not enforce an upload memory size limit in the Content-Length header. A
    remote attacker could possibly use this issue to cause Django to use excessive resources, leading to a
    denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 25.10. (CVE-2026-33034)

    Tarek Nakkouch discovered that Django incorrectly handled underscores in the ASGI headers. A remote
    attacker could possibly use this issue to spoof HTTP headers. This issue only affected Ubuntu 22.04 LTS,
    Ubuntu 24.04 LTS, and Ubuntu 25.10. (CVE-2026-3902)

    It was discovered that Django incorrectly handled verification of model data created with POST requests. A
    remote attacker could possibly use this issue to forge new model permissions. (CVE-2026-4277,
    CVE-2026-4292)

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-8154-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected python-django, python-django-common and / or python3-django packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/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: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:P/PR:L/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-2026-3902");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-4277");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-4277");

  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:"2026/04/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-django");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-django-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3-django");
  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", "ubuntu_pro_sub_detect.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 (! ('18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release || '25.10' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 22.04 / 24.04 / 25.10', '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 ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '18.04', 'pkgname': 'python-django', 'pkgver': '1:1.11.11-1ubuntu1.21+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-4277', 'CVE-2026-4292', 'CVE-2026-33033']},
    {'osver': '18.04', 'pkgname': 'python-django-common', 'pkgver': '1:1.11.11-1ubuntu1.21+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-4277', 'CVE-2026-4292', 'CVE-2026-33033']},
    {'osver': '18.04', 'pkgname': 'python3-django', 'pkgver': '1:1.11.11-1ubuntu1.21+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-4277', 'CVE-2026-4292', 'CVE-2026-33033']},
    {'osver': '20.04', 'pkgname': 'python3-django', 'pkgver': '2:2.2.12-1ubuntu0.29+esm8', 'ubuntu_pro': TRUE, 'cves': ['CVE-2026-4277', 'CVE-2026-4292', 'CVE-2026-33033']},
    {'osver': '22.04', 'pkgname': 'python3-django', 'pkgver': '2:3.2.12-2ubuntu1.26', 'ubuntu_pro': FALSE, 'cves': ['CVE-2026-3902', 'CVE-2026-4277', 'CVE-2026-4292', 'CVE-2026-33033']},
    {'osver': '24.04', 'pkgname': 'python3-django', 'pkgver': '3:4.2.11-1ubuntu1.15', 'ubuntu_pro': FALSE, 'cves': ['CVE-2026-3902', 'CVE-2026-4277', 'CVE-2026-4292', 'CVE-2026-33033', 'CVE-2026-33034']},
    {'osver': '25.10', 'pkgname': 'python3-django', 'pkgver': '3:5.2.4-1ubuntu2.4', 'ubuntu_pro': FALSE, 'cves': ['CVE-2026-3902', 'CVE-2026-4277', 'CVE-2026-4292', 'CVE-2026-33033', 'CVE-2026-33034']}
];

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'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) {
        flag++;
        if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
    }
  }
}

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  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, 'python-django / python-django-common / python3-django');
}