Debian dla-4264 : exempi - 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-4264. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(243315);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/08/04");

  script_cve_id(
    "CVE-2021-36045",
    "CVE-2021-36046",
    "CVE-2021-36047",
    "CVE-2021-36048",
    "CVE-2021-36050",
    "CVE-2021-36051",
    "CVE-2021-36052",
    "CVE-2021-36053",
    "CVE-2021-36054",
    "CVE-2021-36055",
    "CVE-2021-36056",
    "CVE-2021-36057",
    "CVE-2021-36058",
    "CVE-2021-36064",
    "CVE-2021-39847",
    "CVE-2021-40716",
    "CVE-2021-40732",
    "CVE-2021-42528",
    "CVE-2021-42529",
    "CVE-2021-42530",
    "CVE-2021-42531",
    "CVE-2021-42532"
  );

  script_name(english:"Debian dla-4264 : exempi - 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-4264 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4264-1                [email protected]
    https://www.debian.org/lts/security/                          Adrian Bunk
    August 04, 2025                               https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : exempi
    Version        : 2.5.2-1+deb11u1
    CVE ID         : CVE-2021-36045 CVE-2021-36046 CVE-2021-36047 CVE-2021-36048
                     CVE-2021-36050 CVE-2021-36051 CVE-2021-36052 CVE-2021-36053
                     CVE-2021-36054 CVE-2021-36055 CVE-2021-36056 CVE-2021-36057
                     CVE-2021-36058 CVE-2021-36064 CVE-2021-39847 CVE-2021-40716
                     CVE-2021-40732 CVE-2021-42528 CVE-2021-42529 CVE-2021-42530
                     CVE-2021-42531 CVE-2021-42532

    Multiple vulnerabilities have been fixed in Exempi,
    an implementation of XMP (Extensible Metadata Platform).

    CVE-2021-36045

        Out-of-bounds Access

    CVE-2021-36046

        Out-of-bounds Access

    CVE-2021-36047

        Improper Input Validation

    CVE-2021-36048

        Improper Input Validation

    CVE-2021-36050

        Heap-based Buffer Overflow

    CVE-2021-36051

        Heap-based Buffer Overflow

    CVE-2021-36052

        Out-of-bounds Access

    CVE-2021-36053

        Out-of-bounds Access

    CVE-2021-36054

        Heap-based Buffer Overflow

    CVE-2021-36055

        Heap-based Buffer Overflow

    CVE-2021-36056

        Heap-based Buffer Overflow

    CVE-2021-36057

        Write-what-where Condition

    CVE-2021-36058

        Integer Overflow or Wraparound

    CVE-2021-36064

        Buffer Underwrite

    CVE-2021-39847

        Stack-based Buffer Overflow

    CVE-2021-40716

        Out-of-bounds Access

    CVE-2021-40732

        NULL Pointer Dereference

    CVE-2021-42528

        NULL Pointer Dereference

    CVE-2021-42529

        Stack-based Buffer Overflow

    CVE-2021-42530

        Stack-based Buffer Overflow

    CVE-2021-42531

        Stack-based Buffer Overflow

    CVE-2021-42532

        Stack-based Buffer Overflow

    For Debian 11 bullseye, these problems have been fixed in version
    2.5.2-1+deb11u1.

    We recommend that you upgrade your exempi packages.

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

    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

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/exempi");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36045");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36046");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36047");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36048");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36050");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36051");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36052");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36053");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36054");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36055");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36056");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36057");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36058");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-36064");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-39847");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-40716");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-40732");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-42528");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-42529");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-42530");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-42531");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-42532");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/exempi");
  script_set_attribute(attribute:"solution", value:
"Upgrade the exempi packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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:"cvss_score_source", value:"CVE-2021-42532");

  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:"2021/09/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/08/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:exempi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libexempi-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libexempi8");
  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': 'exempi', 'reference': '2.5.2-1+deb11u1'},
    {'release': '11.0', 'prefix': 'libexempi-dev', 'reference': '2.5.2-1+deb11u1'},
    {'release': '11.0', 'prefix': 'libexempi8', 'reference': '2.5.2-1+deb11u1'}
];

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_HOLE,
    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, 'exempi / libexempi-dev / libexempi8');
}