Debian dla-4711 : python3-starlette - 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-4711. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(331605);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/02");

  script_cve_id("CVE-2026-48817", "CVE-2026-54282", "CVE-2026-54283");

  script_name(english:"Debian dla-4711 : python3-starlette - 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 a package installed that is affected by multiple vulnerabilities as referenced in the
dla-4711 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4711-1                [email protected]
    https://www.debian.org/lts/security/                       Daniel Leidert
    August 01, 2026                               https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : starlette
    Version        : 0.26.1-1+deb12u2
    CVE ID         : CVE-2026-48817 CVE-2026-54282 CVE-2026-54283
    Debian Bug     : 1140631 1140632

    Multiple vulnerabilities were found in starlette, a lightweight ASGI
    (Asynchronous Server Gateway Interface) framework/toolkit.

    CVE-2026-48817

       A vulnerability exists where an HTTPEndpoint subclass is registered
       through Route() without an explicit methods argument, and the route
       does not constrain the method and every method reaches the endpoint.

    CVE-2026-54282

       A vulnerability exists where the HTTP request path is not validated
       before being used to reconstruct request.url which can poison
       request.url.hostname and request.url.netloc.

    CVE-2026-54283

       The max_fields and max_part_size limits for request.form() are enforced
       for multipart/form-data, but silently ignored for application/x-www-
       form-urlencoded.

    For Debian 12 bookworm, these problems have been fixed in version
    0.26.1-1+deb12u2.

    We recommend that you upgrade your starlette packages.

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

    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: This is a digitally signed message part

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/starlette");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-48817");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-54282");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-54283");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/starlette");
  script_set_attribute(attribute:"solution", value:
"Upgrade the python3-starlette packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/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:N/I:L/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-2026-54282");

  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:"2026/06/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-starlette");
  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_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': 'python3-starlette', 'reference': '0.26.1-1+deb12u2'}
];

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, 'python3-starlette');
}