Debian dla-4087 : idle-python3.9 - 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-4087. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(232991);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/03/20");

  script_cve_id("CVE-2022-0391", "CVE-2025-0938", "CVE-2025-1795");

  script_name(english:"Debian dla-4087 : idle-python3.9 - 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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4087 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4087-1                [email protected]
    https://www.debian.org/lts/security/                         Sean Whitton
    March 20, 2025                                https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : python3.9
    Version        : 3.9.2-1+deb11u3
    CVE ID         : CVE-2022-0391 CVE-2025-0938 CVE-2025-1795

    Multiple vulnerabilities were discovered in modules shipped with
    cpython 3.9, the primary interpreter for the Python programming
    language.

    CVE-2022-0391

        Functions in the urllib.parse module did not sanitize URLs to remove
        newline characters, which could lead to injection attacks.

    CVE-2025-0938

        Functions in the urllib.parse and urlparse modules accepted domain
        names containing square brackets, which isn't valid.  These
        delimiters are only permitted for IPv6 and IPvFuture hosts.  This
        problem could result in differential parsing between the Python URL
        parser and other specification-compliant URL parsers.

    CVE-2025-1795

        The implementations of e-mail header parsing and folding would
        encode the comma used to separate list items, which could cause
        receiving applications to interpret two items in the list as though
        they were one item.

    For Debian 11 bullseye, these problems have been fixed in version
    3.9.2-1+deb11u3.

    We recommend that you upgrade your python3.9 packages.

    For the detailed security status of python3.9 please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/python3.9

    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/python3.9");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-0391");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-0938");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-1795");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/python3.9");
  script_set_attribute(attribute:"solution", value:
"Upgrade the idle-python3.9 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:POC/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:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/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:N/VI:L/VA:N/SC:N/SI:L/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-0391");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2025-0938");

  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:"2022/02/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/03/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:idle-python3.9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython3.9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython3.9-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython3.9-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython3.9-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython3.9-stdlib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpython3.9-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9-full");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3.9-venv");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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) 2025 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:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': '11.0', 'prefix': 'idle-python3.9', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'libpython3.9', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'libpython3.9-dbg', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'libpython3.9-dev', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'libpython3.9-minimal', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'libpython3.9-stdlib', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'libpython3.9-testsuite', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9-dbg', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9-dev', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9-doc', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9-examples', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9-full', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9-minimal', 'reference': '3.9.2-1+deb11u3'},
    {'release': '11.0', 'prefix': 'python3.9-venv', 'reference': '3.9.2-1+deb11u3'}
];

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, 'idle-python3.9 / libpython3.9 / libpython3.9-dbg / libpython3.9-dev / etc');
}