Debian dla-4462 : python-pil-doc - 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-4462. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(297500);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/01");

  script_cve_id("CVE-2021-23437", "CVE-2022-24303", "CVE-2022-45198");

  script_name(english:"Debian dla-4462 : python-pil-doc - 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-4462 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4462-1                [email protected]
    https://www.debian.org/lts/security/                       Daniel Leidert
    February 01, 2026                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : pillow
    Version        : 8.1.2+dfsg-0.3+deb11u3
    CVE ID         : CVE-2021-23437 CVE-2022-24303 CVE-2022-45198

    Multiple vulnerabilities have been found in Pillow, an image processing
    library for Python.

    CVE-2021-23437

       The getrgb function is susceptible to a ReDoS.

    CVE-2022-24303

       A possible path traversal vulnerability allows attackers to delete
       files.

    CVE-2022-45198

       An improper handling of highly compressed GIF data can lead to a
       decompression bomb.

    For Debian 11 bullseye, these problems have been fixed in version
    8.1.2+dfsg-0.3+deb11u3.

    We recommend that you upgrade your pillow packages.

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

    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/pillow");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-23437");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-24303");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-45198");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/pillow");
  script_set_attribute(attribute:"solution", value:
"Upgrade the python-pil-doc packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P");
  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: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:N/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-2022-24303");

  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:"2021/09/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/02/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/02/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-pil-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-pil");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-pil-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-pil.imagetk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-pil.imagetk-dbg");
  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) 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:"^(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': 'python-pil-doc', 'reference': '8.1.2+dfsg-0.3+deb11u3'},
    {'release': '11.0', 'prefix': 'python3-pil', 'reference': '8.1.2+dfsg-0.3+deb11u3'},
    {'release': '11.0', 'prefix': 'python3-pil-dbg', 'reference': '8.1.2+dfsg-0.3+deb11u3'},
    {'release': '11.0', 'prefix': 'python3-pil.imagetk', 'reference': '8.1.2+dfsg-0.3+deb11u3'},
    {'release': '11.0', 'prefix': 'python3-pil.imagetk-dbg', 'reference': '8.1.2+dfsg-0.3+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, 'python-pil-doc / python3-pil / python3-pil-dbg / python3-pil.imagetk / etc');
}