Ubuntu 20.04 LTS / 22.04 LTS : Python vulnerabilities (USN-7180-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7180-1. 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(213499);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/01/06");

  script_cve_id(
    "CVE-2022-48560",
    "CVE-2022-48565",
    "CVE-2022-48566",
    "CVE-2023-24329",
    "CVE-2023-40217"
  );
  script_xref(name:"USN", value:"7180-1");

  script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS : Python vulnerabilities (USN-7180-1)");

  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 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-7180-1 advisory.

    It was discovered that Python incorrectly handled certain scripts. An attacker could possibly use this
    issue to execute arbitrary code or cause a crash. (CVE-2022-48560)

    It was discovered that Python did not properly handle XML entity declarations in plist files. An attacker
    could possibly use this vulnerability to perform an XML External Entity (XXE) injection, resulting in a
    denial of service or information disclosure. (CVE-2022-48565)

    It was discovered that Python did not properly provide constant-time processing for a crypto operation. An
    attacker could possibly use this issue to perform a timing attack and recover sensitive information.
    (CVE-2022-48566)

    It was discovered that Python incorrectly handled certain inputs. If a user or an automated system were
    tricked into running a specially crafted input, a remote attacker could possibly use this issue to cause a
    denial of service. (CVE-2023-24329)

    It was discovered that Python instances of ssl.SSLSocket were vulnerable to a bypass of the TLS handshake.
    An attacker could possibly use this issue to cause applications to treat unauthenticated received data
    before TLS handshake as authenticated data after TLS handshake. (CVE-2023-40217)

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-7180-1");
  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:POC/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:P/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:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-48565");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2023-40217");

  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:"2020/07/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/01/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/01/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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:"p-cpe:/a:canonical:ubuntu_linux:idle-python2.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython2.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython2.7-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython2.7-minimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython2.7-stdlib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpython2.7-testsuite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python2.7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python2.7-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python2.7-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python2.7-minimal");
  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) 2025 Canonical, Inc. / NASL script (C) 2025 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 (! ('20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04', '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': '20.04', 'pkgname': 'idle-python2.7', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'libpython2.7', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'libpython2.7-dev', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'libpython2.7-minimal', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'libpython2.7-stdlib', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'libpython2.7-testsuite', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'python2.7', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'python2.7-dev', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'python2.7-examples', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '20.04', 'pkgname': 'python2.7-minimal', 'pkgver': '2.7.18-1~20.04.7'},
    {'osver': '22.04', 'pkgname': 'idle-python2.7', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'libpython2.7', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'libpython2.7-dev', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'libpython2.7-minimal', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'libpython2.7-stdlib', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'libpython2.7-testsuite', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'python2.7', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'python2.7-dev', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'python2.7-examples', 'pkgver': '2.7.18-13ubuntu1.5'},
    {'osver': '22.04', 'pkgname': 'python2.7-minimal', 'pkgver': '2.7.18-13ubuntu1.5'}
];

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 (osver && pkgname && pkgver) {
    if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) 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, 'idle-python2.7 / libpython2.7 / libpython2.7-dev / etc');
}